The chemical of reaction
•Download as PPT, PDF•
1 like•351 views
A chemical reaction involves a change in the composition of a substance. The document discusses 4 types of chemical reactions: 1) Precipitation reactions which involve the formation of an insoluble solid, like calcium carbonate. 2) Color change reactions which alter the color of a substance, like an apple turning brown when peeled. 3) Gas production reactions where a gas is formed, such as acetylene gas from carbide and water. 4) Temperature change reactions that result in a change in temperature, like a firecracker exploding and heating the glass walls.
Report
Share
Report
Share
![What is a chemical reaction? ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
Ppt chemical or physical reaction
Here are the examples added to the table:
Chemical Physical
Making toast Boiling water
Boiling an egg A light bulb getting hot
Food going mouldy Adding sugar to a cup of tea
Setting off a firework Diluting orange juice with water
Frying an egg Puddles drying
Obj 2 chemical and physical change
The document discusses the differences between physical and chemical changes. A physical change affects the physical properties of a substance but does not change its chemical composition, and can usually be reversed. A chemical change results in an entirely new substance through changes in chemical bonds, and cannot be undone. Examples of each type of change are provided to illustrate the differences. The document then describes a game where teams must identify if examples given are physical or chemical changes.
Chem 3/4
Polyvinyl chloride (PVC) is produced from petroleum-derived chemicals that are cracked, chlorinated, and polymerized. It is widely used due to its low cost but poses environmental and health risks throughout its lifecycle. Production can release carcinogenic chemicals into the air and water. PVC products can leach toxic additives. Disposal often involves landfilling or incineration, which can contaminate the environment and release dioxins that accumulate and cause harm.
Physical and chemical changes
Changes in matter are classified into physical and chemical changes.Physical Changes are those in which the identifying properties of substances remain unchanged. Chemical Changes are those in which new substances with new properties are formed.
Physical & chemical changes
This document discusses physical and chemical changes. It defines physical changes as changes that affect physical properties but do not form new substances, while chemical changes form new substances with different properties and identities. Examples of physical changes given include state changes like melting and dissolving, while chemical changes include cooking, burning, and rusting. Signs that a chemical change is occurring include changes in color, odor, production of heat, fizzing or bubbling, sound, and light. The document asks readers to identify examples as physical or chemical changes.
Heating And Cooling Lesson 4
The document discusses convection in liquids and gases through several experiments and examples:
1) An experiment shows that pink water heated from below rises, demonstrating convection currents.
2) Another experiment shows that ice at the bottom of a boiling tube does not melt when the top is heated, as convection cannot occur in solids.
3) Convection occurs when hot liquids or gases rise and cold liquids or gases fall, and is demonstrated using smoke rising in a heated box.
4) Hot air balloons rise because the hot air inside has lower density than surrounding air.
Physical and chemical changes
The document discusses physical and chemical changes. Physical changes alter the state of a substance but do not create a new substance, such as melting, freezing, or breaking something into smaller pieces. Chemical changes form an entirely new substance, evidenced by a change in color, gas release, or new solid forming. Examples of physical changes include shattering a plate or melting wax, while examples of chemical changes include burning wood or rusting metal.
Physical vs chemical changes notes
Physical changes alter a substance's appearance or structure but do not change its chemical composition. Examples include melting, freezing, and dissolving. Chemical changes form new substances with different properties through rearrangement of atoms, as seen in rusting, burning, and cooking. Evidence of a chemical change may include production of a gas, change in temperature, formation of a precipitate, or color change. A chemical change can be confirmed if the products of a chemical equation are different from the reactants.
Recommended
Ppt chemical or physical reaction
Here are the examples added to the table:
Chemical Physical
Making toast Boiling water
Boiling an egg A light bulb getting hot
Food going mouldy Adding sugar to a cup of tea
Setting off a firework Diluting orange juice with water
Frying an egg Puddles drying
Obj 2 chemical and physical change
The document discusses the differences between physical and chemical changes. A physical change affects the physical properties of a substance but does not change its chemical composition, and can usually be reversed. A chemical change results in an entirely new substance through changes in chemical bonds, and cannot be undone. Examples of each type of change are provided to illustrate the differences. The document then describes a game where teams must identify if examples given are physical or chemical changes.
Chem 3/4
Polyvinyl chloride (PVC) is produced from petroleum-derived chemicals that are cracked, chlorinated, and polymerized. It is widely used due to its low cost but poses environmental and health risks throughout its lifecycle. Production can release carcinogenic chemicals into the air and water. PVC products can leach toxic additives. Disposal often involves landfilling or incineration, which can contaminate the environment and release dioxins that accumulate and cause harm.
Physical and chemical changes
Changes in matter are classified into physical and chemical changes.Physical Changes are those in which the identifying properties of substances remain unchanged. Chemical Changes are those in which new substances with new properties are formed.
Physical & chemical changes
This document discusses physical and chemical changes. It defines physical changes as changes that affect physical properties but do not form new substances, while chemical changes form new substances with different properties and identities. Examples of physical changes given include state changes like melting and dissolving, while chemical changes include cooking, burning, and rusting. Signs that a chemical change is occurring include changes in color, odor, production of heat, fizzing or bubbling, sound, and light. The document asks readers to identify examples as physical or chemical changes.
Heating And Cooling Lesson 4
The document discusses convection in liquids and gases through several experiments and examples:
1) An experiment shows that pink water heated from below rises, demonstrating convection currents.
2) Another experiment shows that ice at the bottom of a boiling tube does not melt when the top is heated, as convection cannot occur in solids.
3) Convection occurs when hot liquids or gases rise and cold liquids or gases fall, and is demonstrated using smoke rising in a heated box.
4) Hot air balloons rise because the hot air inside has lower density than surrounding air.
Physical and chemical changes
The document discusses physical and chemical changes. Physical changes alter the state of a substance but do not create a new substance, such as melting, freezing, or breaking something into smaller pieces. Chemical changes form an entirely new substance, evidenced by a change in color, gas release, or new solid forming. Examples of physical changes include shattering a plate or melting wax, while examples of chemical changes include burning wood or rusting metal.
Physical vs chemical changes notes
Physical changes alter a substance's appearance or structure but do not change its chemical composition. Examples include melting, freezing, and dissolving. Chemical changes form new substances with different properties through rearrangement of atoms, as seen in rusting, burning, and cooking. Evidence of a chemical change may include production of a gas, change in temperature, formation of a precipitate, or color change. A chemical change can be confirmed if the products of a chemical equation are different from the reactants.
Grade 9, U1-L5B, Test for Gas
This document describes tests to identify common gases. It lists the name of each gas, its positive test indicator, and the observed result of that test. The order of tests is also provided: use a glowing splint first to check for oxygen, then a burning splint for hydrogen, followed by a limewater test for carbon dioxide and cobalt chloride paper for water vapor if the previous tests were negative.
Physical & chemical changes oh my
Here are the answers:
1) Cutting Grass - Physical
2) Burning Toast - Chemical
3) Wadding up Homework - Physical
4) Ice Cream Melting - Physical
5) Frying an Egg - Chemical
6) Gasoline Combustion - Chemical
7) Sweat Evaporating - Physical
Chemical And Physical Changes Quiz 1
The document is a quiz about chemical and physical changes for 5th grade physical science students. It contains multiple choice questions about examples of physical and chemical changes, such as nitrogen becoming a liquid through cooling, water changing state through boiling and freezing, and ice melting into water. It also asks students to identify clues that a chemical change occurred, like a change in color or smell.
Chemcial reactions
Physical changes alter a substance's physical properties but do not change its chemical composition. Chemical changes produce new substances with different chemical properties. A physical change is usually reversible while a chemical change produces new substances that cannot easily be reversed back to the original ones. Some examples of physical changes include changes of state from solid to liquid to gas, dissolving, and changes in shape or size. Chemical changes include burning, rusting, and cooking.
Physical or chemical changes
This document discusses the differences between physical and chemical changes. A physical change alters the form of a substance but does not change its chemical composition, while a chemical change transforms a substance into one with different properties. Some signs of a chemical change include color changes, precipitation, gas production, temperature changes, and changes in characteristic properties like odor. Examples are provided of changes that are physical, like cutting paper or a disappearing puddle, versus those that are chemical, such as burning toast or rocket fuel.
Changes in matter.pptx 20013 2014 ( Physical and chemical change)
This document discusses physical and chemical changes in matter. It begins by outlining key questions about how matter changes and objectives to analyze how matter changes physically and chemically. It then provides examples of physical changes like tearing paper, folding a handkerchief, and mixtures. Chemical changes form new substances, like rusting iron or souring milk. Finally, it defines physical changes as changes in size, shape or appearance without new substances, while chemical changes result in new substances and altered properties.
Physical And Chemical Changes
The document compares physical and chemical properties of substances and changes. Physical changes do not alter a substance's identity and can often be reversed, such as melting or freezing. Chemical changes create new substances with different properties through chemical reactions. Clues that a chemical change is occurring include color changes, production of gases, heat, or new odors. Chemical changes like baking a cake cannot be undone since new substances are formed.
Physical and chemical changes of matter
This document discusses physical and chemical changes of matter. It provides examples of physical changes such as melting, dissolving, and grinding, which change a substance's appearance or state but not its chemical composition. Chemical changes, like burning paper or sugar, produce new substances with different properties from the original. The key difference is that physical changes alter appearance or state while chemical changes alter the actual molecular structure and identity of a substance.
Lab tests ok1294990656
The document discusses several chemistry concepts and experiments including:
1) Testing for carbon dioxide by adding acid to carbonates which produces carbon dioxide gas.
2) Using flame tests to identify metal ions based on the color of flames they produce.
3) Metal ions forming precipitates when sodium hydroxide is added, such as calcium ions forming calcium hydroxide.
4) Experiments to test for chloride, sulfate, ammonium, nitrate, bromide and iodide ions using chemical reactions and indicators.
Contact Process
Contact Process PPT, from my chemistry teacher. Mr.Bedford. For anyone who can use this for help. This is for IGCSE /GCSE Level.
Baloon Inflation
The document summarizes a balloon inflation experiment where yeast, sugar, hot water, and a balloon are used. The experimental procedure has students pouring yeast, sugar, and hot water into a bottle and placing a balloon over the bottle for 30 minutes. During this time, the yeast consumes the sugar and releases carbon dioxide gas, causing the liquid to foam and the balloon to inflate. The scientific explanation is that this demonstrates the process of fermentation.
Alkyl halides-3 5
Chloroform can be prepared through several methods. It is commonly produced from carbontetrachloride by reduction with iron filings and water, or from chloral hydrate by distillation with sodium hydroxide. Another industrial method involves the distillation of ethyl alcohol with bleaching powder, which involves the hydrolysis, oxidation, and chlorination of the alcohol.
Commercial preparation of Sodium hydroxide
This document summarizes the commercial production process of sodium hydroxide (NaOH) through electrolysis of brine. It describes how salt is dissolved in water to create a brine solution, which is purified and then sent to diaphragm cells where electrolysis occurs. During electrolysis, sodium ions migrate to the cathode where they react with hydroxyl ions to form NaOH, while chlorine gas forms at the anode. The end products are caustic soda solution extracted from the cathode chamber and chlorine gas collected from the anode chamber.
Chemical and Physical Changes
A physical change alters a substance's physical properties like shape, size, or state, but does not create new substances. A chemical change produces new substances through chemical reactions, altering both physical and chemical properties. Some key differences are that physical changes are typically reversible without new substances forming, while chemical changes are permanent reactions that form new substances through energy absorption or release. Rusting of iron is a chemical change that occurs when iron reacts with oxygen and water in the air, forming hydrated iron oxide (rust) which damages the iron over time.
Sulfuric acid production by contact method (traditional)
In this slides is about Sulfuric acid production by contact method that is a traditional method to produce sulfuric acid and more about sulfur burning models. In addition you can find more different and new processes to produce it.
chemical and phsical changes
1) The document discusses physical and chemical changes, providing examples of each from everyday life.
2) A physical change alters a substance's physical properties like shape, size, or state but does not create new substances. It is generally reversible.
3) A chemical change produces new substances through chemical reactions. It is accompanied by changes in heat, light, smell, color or gas production and is not reversible. Common examples are burning, rusting, and food spoilage.
Physical Or Chemical Change Qz3371
Physical changes alter the physical properties of a substance but do not change its chemical composition. Chemical changes produce new substances through chemical reactions. Some signs that a chemical change has occurred include a color change, gas formation, changes in temperature or light emission, precipitation of a solid, or production of a gas. Common examples of physical changes are melting, freezing, and cutting, while chemical changes include burning, digestion, and rusting.
PHYSICAL AND CHEMICAL CHANGES
This document discusses physical and chemical changes. Physical changes alter a substance's physical properties or shape but do not change its chemical composition, giving examples like melting, freezing, and breaking. Chemical changes create new substances through synthesis or decomposition reactions, such as burning or rusting. The key difference is that physical changes do not alter a substance's chemical makeup while chemical changes produce different chemical substances.
Evidences of Chemical Reactions.pptx
This document provides information about classifying physical and chemical changes. It includes definitions of physical and chemical changes and examples of each. It then describes several chemistry experiments students will perform in groups, including reactions involving sodium hydroxide and phenolpthalein, coke and evaporated milk, urea and evaporated milk, vinegar and baking soda, potassium iodide and starch, silver nitrate and sodium hydroxide, and sodium carbonate and silver nitrate. The document discusses evidence of chemical changes observed in some of the experiments and instructs students on safety procedures.
Carbon dioxide
1) Carbon dioxide is produced through the combustion of organic materials like wood, coal, tobacco, oil and gasoline as well as through respiration of living organisms.
2) Experiments show that carbon dioxide is produced during exhalation and the combustion of a candle.
3) Carbon dioxide is heavier than air, colorless, odorless, tasteless, and dissolves in water. It is used in fire extinguishers and to make soft drinks and bubbled bread.
Class 10 chemical reactions and equations
Types of reactions, Redox reactions, Reaction between acid and metal, Types of decomposition reaction, corrosion and rancidity.Acidic and basic nature of oxide, prevention method of corrosion.
Preparation and properties of acetylene
The document summarizes an experiment on the preparation and properties of acetylene gas. Key points:
1. Acetylene gas is prepared by the hydrolysis of calcium carbide with water. It is a colorless gas with a garlic-like odor.
2. Acetylene's properties include burning with a luminous yellow flame, reacting slowly with bromine and permanganate solutions, and forming precipitates with silver nitrate and copper chloride solutions.
3. The experiment allowed students to observe acetylene's preparation, combustion, halogenation, oxidation, and substitution reactions. It provided insights applicable to laboratory analysis of body fluids and blood samples.
More Related Content
What's hot
Grade 9, U1-L5B, Test for Gas
This document describes tests to identify common gases. It lists the name of each gas, its positive test indicator, and the observed result of that test. The order of tests is also provided: use a glowing splint first to check for oxygen, then a burning splint for hydrogen, followed by a limewater test for carbon dioxide and cobalt chloride paper for water vapor if the previous tests were negative.
Physical & chemical changes oh my
Here are the answers:
1) Cutting Grass - Physical
2) Burning Toast - Chemical
3) Wadding up Homework - Physical
4) Ice Cream Melting - Physical
5) Frying an Egg - Chemical
6) Gasoline Combustion - Chemical
7) Sweat Evaporating - Physical
Chemical And Physical Changes Quiz 1
The document is a quiz about chemical and physical changes for 5th grade physical science students. It contains multiple choice questions about examples of physical and chemical changes, such as nitrogen becoming a liquid through cooling, water changing state through boiling and freezing, and ice melting into water. It also asks students to identify clues that a chemical change occurred, like a change in color or smell.
Chemcial reactions
Physical changes alter a substance's physical properties but do not change its chemical composition. Chemical changes produce new substances with different chemical properties. A physical change is usually reversible while a chemical change produces new substances that cannot easily be reversed back to the original ones. Some examples of physical changes include changes of state from solid to liquid to gas, dissolving, and changes in shape or size. Chemical changes include burning, rusting, and cooking.
Physical or chemical changes
This document discusses the differences between physical and chemical changes. A physical change alters the form of a substance but does not change its chemical composition, while a chemical change transforms a substance into one with different properties. Some signs of a chemical change include color changes, precipitation, gas production, temperature changes, and changes in characteristic properties like odor. Examples are provided of changes that are physical, like cutting paper or a disappearing puddle, versus those that are chemical, such as burning toast or rocket fuel.
Changes in matter.pptx 20013 2014 ( Physical and chemical change)
This document discusses physical and chemical changes in matter. It begins by outlining key questions about how matter changes and objectives to analyze how matter changes physically and chemically. It then provides examples of physical changes like tearing paper, folding a handkerchief, and mixtures. Chemical changes form new substances, like rusting iron or souring milk. Finally, it defines physical changes as changes in size, shape or appearance without new substances, while chemical changes result in new substances and altered properties.
Physical And Chemical Changes
The document compares physical and chemical properties of substances and changes. Physical changes do not alter a substance's identity and can often be reversed, such as melting or freezing. Chemical changes create new substances with different properties through chemical reactions. Clues that a chemical change is occurring include color changes, production of gases, heat, or new odors. Chemical changes like baking a cake cannot be undone since new substances are formed.
Physical and chemical changes of matter
This document discusses physical and chemical changes of matter. It provides examples of physical changes such as melting, dissolving, and grinding, which change a substance's appearance or state but not its chemical composition. Chemical changes, like burning paper or sugar, produce new substances with different properties from the original. The key difference is that physical changes alter appearance or state while chemical changes alter the actual molecular structure and identity of a substance.
Lab tests ok1294990656
The document discusses several chemistry concepts and experiments including:
1) Testing for carbon dioxide by adding acid to carbonates which produces carbon dioxide gas.
2) Using flame tests to identify metal ions based on the color of flames they produce.
3) Metal ions forming precipitates when sodium hydroxide is added, such as calcium ions forming calcium hydroxide.
4) Experiments to test for chloride, sulfate, ammonium, nitrate, bromide and iodide ions using chemical reactions and indicators.
Contact Process
Contact Process PPT, from my chemistry teacher. Mr.Bedford. For anyone who can use this for help. This is for IGCSE /GCSE Level.
Baloon Inflation
The document summarizes a balloon inflation experiment where yeast, sugar, hot water, and a balloon are used. The experimental procedure has students pouring yeast, sugar, and hot water into a bottle and placing a balloon over the bottle for 30 minutes. During this time, the yeast consumes the sugar and releases carbon dioxide gas, causing the liquid to foam and the balloon to inflate. The scientific explanation is that this demonstrates the process of fermentation.
Alkyl halides-3 5
Chloroform can be prepared through several methods. It is commonly produced from carbontetrachloride by reduction with iron filings and water, or from chloral hydrate by distillation with sodium hydroxide. Another industrial method involves the distillation of ethyl alcohol with bleaching powder, which involves the hydrolysis, oxidation, and chlorination of the alcohol.
Commercial preparation of Sodium hydroxide
This document summarizes the commercial production process of sodium hydroxide (NaOH) through electrolysis of brine. It describes how salt is dissolved in water to create a brine solution, which is purified and then sent to diaphragm cells where electrolysis occurs. During electrolysis, sodium ions migrate to the cathode where they react with hydroxyl ions to form NaOH, while chlorine gas forms at the anode. The end products are caustic soda solution extracted from the cathode chamber and chlorine gas collected from the anode chamber.
Chemical and Physical Changes
A physical change alters a substance's physical properties like shape, size, or state, but does not create new substances. A chemical change produces new substances through chemical reactions, altering both physical and chemical properties. Some key differences are that physical changes are typically reversible without new substances forming, while chemical changes are permanent reactions that form new substances through energy absorption or release. Rusting of iron is a chemical change that occurs when iron reacts with oxygen and water in the air, forming hydrated iron oxide (rust) which damages the iron over time.
Sulfuric acid production by contact method (traditional)
In this slides is about Sulfuric acid production by contact method that is a traditional method to produce sulfuric acid and more about sulfur burning models. In addition you can find more different and new processes to produce it.
chemical and phsical changes
1) The document discusses physical and chemical changes, providing examples of each from everyday life.
2) A physical change alters a substance's physical properties like shape, size, or state but does not create new substances. It is generally reversible.
3) A chemical change produces new substances through chemical reactions. It is accompanied by changes in heat, light, smell, color or gas production and is not reversible. Common examples are burning, rusting, and food spoilage.
Physical Or Chemical Change Qz3371
Physical changes alter the physical properties of a substance but do not change its chemical composition. Chemical changes produce new substances through chemical reactions. Some signs that a chemical change has occurred include a color change, gas formation, changes in temperature or light emission, precipitation of a solid, or production of a gas. Common examples of physical changes are melting, freezing, and cutting, while chemical changes include burning, digestion, and rusting.
PHYSICAL AND CHEMICAL CHANGES
This document discusses physical and chemical changes. Physical changes alter a substance's physical properties or shape but do not change its chemical composition, giving examples like melting, freezing, and breaking. Chemical changes create new substances through synthesis or decomposition reactions, such as burning or rusting. The key difference is that physical changes do not alter a substance's chemical makeup while chemical changes produce different chemical substances.
What's hot (18)
Changes in matter.pptx 20013 2014 ( Physical and chemical change)
Changes in matter.pptx 20013 2014 ( Physical and chemical change)
Sulfuric acid production by contact method (traditional)
Sulfuric acid production by contact method (traditional)
Similar to The chemical of reaction
Evidences of Chemical Reactions.pptx
This document provides information about classifying physical and chemical changes. It includes definitions of physical and chemical changes and examples of each. It then describes several chemistry experiments students will perform in groups, including reactions involving sodium hydroxide and phenolpthalein, coke and evaporated milk, urea and evaporated milk, vinegar and baking soda, potassium iodide and starch, silver nitrate and sodium hydroxide, and sodium carbonate and silver nitrate. The document discusses evidence of chemical changes observed in some of the experiments and instructs students on safety procedures.
Carbon dioxide
1) Carbon dioxide is produced through the combustion of organic materials like wood, coal, tobacco, oil and gasoline as well as through respiration of living organisms.
2) Experiments show that carbon dioxide is produced during exhalation and the combustion of a candle.
3) Carbon dioxide is heavier than air, colorless, odorless, tasteless, and dissolves in water. It is used in fire extinguishers and to make soft drinks and bubbled bread.
Class 10 chemical reactions and equations
Types of reactions, Redox reactions, Reaction between acid and metal, Types of decomposition reaction, corrosion and rancidity.Acidic and basic nature of oxide, prevention method of corrosion.
Preparation and properties of acetylene
The document summarizes an experiment on the preparation and properties of acetylene gas. Key points:
1. Acetylene gas is prepared by the hydrolysis of calcium carbide with water. It is a colorless gas with a garlic-like odor.
2. Acetylene's properties include burning with a luminous yellow flame, reacting slowly with bromine and permanganate solutions, and forming precipitates with silver nitrate and copper chloride solutions.
3. The experiment allowed students to observe acetylene's preparation, combustion, halogenation, oxidation, and substitution reactions. It provided insights applicable to laboratory analysis of body fluids and blood samples.
Lesson 6
This document discusses physical and chemical changes. It provides examples of different physical and chemical changes like dissolving sugar in water, burning of coal, and digestion of food. It also discusses how rusting occurs faster in coastal areas due to higher moisture content compared to deserts. The document contains questions and answers about classifying changes as physical or chemical, and examples like burning of wood and cutting it. It explains how painting iron prevents rusting and how crystals of copper sulfate are prepared through crystallization.
Simple Chemistry Experiments
Classic, mini chemistry experiments- some require materials typically found in a high school chemistry lab, while others are extremely simple. Very straightforward!
Changing Matter
The document discusses two types of changes: physical changes and chemical changes. It provides examples of each type of change and notes that chemical changes result in new substances being formed, while physical changes do not. The document also compares and contrasts physical and chemical changes. It notes that chemical changes are permanent and difficult to reverse, while physical changes are temporary and can be reversed.
Physical-and-Chemical-Change-Practice-Excercise (2).pdf
This document discusses the differences between physical and chemical properties and changes. Physical properties can be observed without changing the substance and include characteristics like state, color, and hardness. Chemical properties indicate how a substance reacts chemically with others and involve a change forming new substances. Physical changes alter the substance's size, shape, or state without forming anything new, while chemical changes produce one or more new substances.
ch.-1 chemical reactions and equations .pptx
Here are some potential next steps based on the findings:
- Further research different types of chemical reactions like displacement, double displacement, oxidation-reduction, etc. to gain a deeper understanding of each.
- Practice writing balanced chemical equations for various reactions to strengthen skills in this area. Identifying the reactants, products, and coefficients is an important part of understanding chemical changes.
- Explore applications of chemical reactions in different contexts like cooking, medicine, industry, environment, etc. to see the relevance of chemistry concepts.
- Design experiments to observe chemical reactions firsthand in the lab. Seeing reactions occur can help cement conceptual understanding. Safety should always be the top priority for any experiments.
- Teach others about
TOPIC 4. CHEMICAL REACTIONS -LAB
This document provides instructions and background information for several chemistry experiments involving chemical reactions. The first experiment demonstrates that mixing ammonium nitrate and water is a physical, endothermic reaction that produces a cold pack. The second experiment shows that mixing calcium chloride and sodium bicarbonate produces carbon dioxide gas and causes a color change, indicating a chemical reaction. The document explains how to set up, carry out, observe, and analyze the results of these experiments. It also provides safety precautions and questions to help students understand the differences between physical and chemical reactions.
Physical & Chemical Changes
This document discusses physical and chemical changes. It defines physical changes as changes that do not alter the chemical composition of a substance and are typically reversible, such as freezing or dissolving. Chemical changes alter the chemical composition by producing new substances, are not easily reversible, and result in changes like formation of a gas or precipitate, changes in color or mass. Examples of each type of change are provided along with signs that indicate whether a change is physical or chemical. Common chemical reactions like synthesis, decomposition, precipitation, and acid-base neutralization are also outlined.
Marshmallows Chemistry
This lab report examines the enthalpy of neutralization reactions through calorimetry. The student measured the initial temperatures of sodium hydroxide (NaOH) and four acids - hydrochloric acid (HCl), nitric acid (HNO3), phenol, and an unknown HCl. Temperature changes were recorded every 2 seconds for the NaOH-HCl reaction and every 10 seconds for 1 minute for the other reactions. Calculations were done to determine the enthalpy change (ΔH) for each reaction based on the temperature changes and concentrations of the reactants. The student aimed to use calorimetry to determine the enthalpy of different neutralization reactions.
Mid year review game for science template
The document describes the instructions and questions for a board game. It includes directions like moving spaces on the game board, taking turns, and switching players. It also includes multiple choice and matching questions about science topics like the states of matter, energy, mixtures, chemical reactions, and the atom.
German problems 2011
The document describes the process for selecting the German team for the International Chemistry Olympiad (IChO), which involves 4 rounds of testing. Students first complete problems at home, then the top scorers advance to chemistry camps involving theoretical and practical exams. The top 15 students then participate in a final week-long practical training camp, after which the IChO team is selected. The document also provides the problems and solutions for each round of the national competition.
Chemical & Physical Change Review
This document provides information about studying for a science lab test. It discusses key concepts to review like the properties of matter, how to study lab tools and techniques, and definitions of important science terms. Specific advice includes practicing with lab tools, making graphs, memorizing definitions, using online quizzing resources, and having peers quiz you. Some example review topics are chemical and physical changes, endothermic and exothermic reactions, the law of conservation of mass, phase changes, and the water cycle.
CBSE-Class-7-NCERT-Science-Book-Physical-and-Chemical-Changes-chapter-6.pdf
Physical and chemical changes can be distinguished based on whether new substances are formed. A physical change alters a substance's physical properties but does not create new materials, while a chemical change produces one or more new substances through chemical reactions. Examples provided demonstrate that rusting of iron, burning of magnesium, and reactions of copper sulfate are chemical changes, while cutting of paper and melting of ice are physical changes. Crystallization is identified as a physical change that forms pure substances from their solutions.
Class10 science-notes-chapter1
1) A chemical reaction is a process where one or more new substances are formed. Chemical equations represent reactions using symbols for reactants and products.
2) Balanced chemical equations ensure the same number and type of atoms for each element on both sides of the reaction arrow.
3) Common reaction types include combination, decomposition, displacement, and double displacement. Combination reactions form one product from two or more reactants while decomposition reactions break down one reactant into multiple products.
C1.2 limestone
When limestone (calcium carbonate) is heated, it undergoes thermal decomposition. This chemical reaction breaks down the limestone into its constituent elements - calcium, oxygen, and carbon. Some of the mass is lost as a gas, carbon dioxide, which escapes. Therefore, the mass of the remaining solid products (calcium oxide) is less than the original mass of limestone before heating.
Matter (Part 2)
The document discusses the key differences between elements, compounds, and mixtures. It defines elements as the simplest form of matter that has unique properties, and notes that all substances on the periodic table are elements. Compounds are defined as substances made of two or more elements bonded together that can be broken down through chemical means into simpler substances. Compounds have different properties than their component elements. Mixtures can be either homogeneous, with a uniform composition throughout, or heterogeneous, with a non-uniform composition. The document provides examples of chemical changes and physical changes to further illustrate the differences.
Similar to The chemical of reaction (20)
Physical-and-Chemical-Change-Practice-Excercise (2).pdf
Physical-and-Chemical-Change-Practice-Excercise (2).pdf
Chemical Reaction Science 10 lesson Fourth quarter
Chemical Reaction Science 10 lesson Fourth quarter
CBSE-Class-7-NCERT-Science-Book-Physical-and-Chemical-Changes-chapter-6.pdf
CBSE-Class-7-NCERT-Science-Book-Physical-and-Chemical-Changes-chapter-6.pdf
More from masato25
Temperature
The document discusses temperature measurement and different temperature scales. It defines temperature and describes how thermometers are used to measure temperature. It explains the Celsius, Fahrenheit and Kelvin temperature scales, including their lower and upper fixed points which define freezing and boiling temperatures. Formulas are provided for converting between the different scales.
Quantities and unit
1. There are seven fundamental physical quantities: length, mass, time, electric current, temperature, amount of substance, and luminous intensity.
2. Derived quantities are quantities that can be defined and expressed in terms of fundamental quantities, such as area, volume, speed, density, etc.
3. The International System of Units (SI) defines consistent units for measuring fundamental and derived quantities.
Matterstates
Water exists in three states: as a liquid, which takes the shape of its container; as a solid like ice or snow; and as an invisible gas called water vapor that forms clouds and steam. Water can change between these states by adding or removing heat, with solids melting into liquids when heat is added and liquids freezing into solids or evaporating into vapor when heat is removed or increased.
Materi kinetic theory
1. The kinetic theory of matter states that all matter is made up of tiny particles called atoms and molecules that are in continuous random motion.
2. Brownian motion provides evidence for this theory by showing the random movement of small particles suspended in a fluid under a microscope.
3. The pressure exerted by a gas is caused by collisions of the gas molecules with the walls of their container, and increases when the temperature rises or volume decreases due to the more vigorous motion of the molecules.
Heat flow
The document discusses the three methods of heat transfer: conduction, convection, and radiation. Conduction involves the transfer of heat through direct contact of objects. Convection involves the transfer of heat by the circulation of fluids like gases and liquids. Radiation involves the transfer of heat through electromagnetic waves such as infrared radiation through space. The document provides examples of how each process transfers heat and materials that conduct or insulate heat well.
Gas expansion
The document discusses how heating gases causes them to expand, making hot air balloons and zeppelins able to fly. Gases increase in volume when heated due to thermal expansion, with the volume expansion coefficient of gases being approximately 0.00367 per degree Celsius. A simple experiment is described to investigate how heating gases causes them to expand and rise, demonstrating the principles that allow hot air balloons and zeppelins to become airborne.
Expansion solid
The document discusses thermal expansion in solids. It explains that solids expand when heated as the internal energy of atoms increases, causing them to vibrate and occupy more space. This is why gaps are left between railway tracks - to allow for expansion on hot days which could otherwise cause bending and accidents. Equations of linear, area, and volume expansion are provided, stating the change is proportional to the initial measurement and temperature change.
Evaporation
The document discusses evaporation and the factors that affect the rate of evaporation, including temperature, surface area, humidity, and air movement. It explains that evaporation is a cooling process where fast-moving liquid particles escape at the surface and enter the vapor phase, lowering the temperature of the remaining liquid. Condensation is described as the opposite process of evaporation. Examples are provided to illustrate how to calculate the energy required for evaporation and the increase in body temperature if that energy was not removed through sweating during exercise.
Density
The document discusses density and how it is calculated. It defines density for liquids and solids, and shows that density does not depend on size or shape. Density is a characteristic of matter. The document provides examples of calculating density using mass and volume measurements.
Ch07 separation techniques
The document discusses various separation techniques including filtration, distillation, magnetic attraction, evaporation, and paper chromatography. It explains how each technique uses differences in properties between constituents in a mixture to separate them. Specific examples are given of how these techniques are used to separate substances and obtain pure water from sea water through desalination.
Ch06 elements, compounds & mixtures
This document discusses the classification of matter into elements, compounds, and mixtures. It defines elements as the simplest form of matter that cannot be broken down further through chemical reactions. Compounds are formed via chemical reactions and consist of two or more chemically bonded elements. Mixtures are physical combinations of elements and/or compounds that are not chemically bonded and can be separated using physical means. The document provides examples and properties to distinguish among these three classifications of matter.
Physical and chemical properties ppt
Physical properties describe a substance without changing its chemical makeup, such as state of matter, shape, or texture. Chemical properties describe a substance's reactivity and ability to change into different substances through chemical reactions like burning or corrosion. Some key physical properties include melting, freezing, and breaking, while important chemical properties involve flammability and reactivity with other materials through combustion or other reactions.
The classification of matters
This document classifies different types of matter. It defines matter as anything that has mass and takes up space. Elements are single types of matter that cannot be broken down further, and can be single atoms or molecules. Compounds are single matters made of two or more elements chemically bonded together in specific ratios. Mixtures are combinations of matters that keep their original properties and can be either homogeneous, like solutions, or heterogeneous, like suspensions.
Elements
Elements are pure substances that cannot be broken down further through chemical or physical means. There are currently 118 known elements, with new ones occasionally being discovered through artificial nuclear reactions. Elements are identified by their atomic number, which represents the number of protons in the nucleus. Elements are the basic building blocks of all matter and are used to create thousands of materials, though some like plutonium are also used in nuclear weapons due to their radioactive properties.
Acid, base and salt
This document describes an experiment to classify bases using litmus paper. Students immersed blue and red litmus paper in orange juice, ammonia, and water, and recorded the color changes. The orange juice caused the blue litmus paper to turn red, indicating it is a base. Ammonia caused the red litmus paper to turn blue, also identifying it as a base. Water did not change the color of either litmus paper, showing it is neutral.
More from masato25 (17)
Recently uploaded
Introduction of Cybersecurity with OSS at Code Europe 2024
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
The Microsoft 365 Migration Tutorial For Beginner.pptx
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
AppSec PNW: Android and iOS Application Security with MobSF
Mobile Security Framework - MobSF is a free and open source automated mobile application security testing environment designed to help security engineers, researchers, developers, and penetration testers to identify security vulnerabilities, malicious behaviours and privacy concerns in mobile applications using static and dynamic analysis. It supports all the popular mobile application binaries and source code formats built for Android and iOS devices. In addition to automated security assessment, it also offers an interactive testing environment to build and execute scenario based test/fuzz cases against the application.
This talk covers:
Using MobSF for static analysis of mobile applications.
Interactive dynamic security assessment of Android and iOS applications.
Solving Mobile app CTF challenges.
Reverse engineering and runtime analysis of Mobile malware.
How to shift left and integrate MobSF/mobsfscan SAST and DAST in your build pipeline.
Programming Foundation Models with DSPy - Meetup Slides
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
HCL Notes and Domino License Cost Reduction in the World of DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
Choosing The Best AWS Service For Your Website + API.pptx
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
Astute Business Solutions | Oracle Cloud Partner |
Your goto partner for Oracle Cloud, PeopleSoft, E-Business Suite, and Ellucian Banner. We are a firm specialized in managed services and consulting.
Generating privacy-protected synthetic data using Secludy and Milvus
During this demo, the founders of Secludy will demonstrate how their system utilizes Milvus to store and manipulate embeddings for generating privacy-protected synthetic data. Their approach not only maintains the confidentiality of the original data but also enhances the utility and scalability of LLMs under privacy constraints. Attendees, including machine learning engineers, data scientists, and data managers, will witness first-hand how Secludy's integration with Milvus empowers organizations to harness the power of LLMs securely and efficiently.
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...
Folding is a recent technique for building efficient recursive SNARKs. Several elegant folding protocols have been proposed, such as Nova, Supernova, Hypernova, Protostar, and others. However, all of them rely on an additively homomorphic commitment scheme based on discrete log, and are therefore not post-quantum secure. In this work we present LatticeFold, the first lattice-based folding protocol based on the Module SIS problem. This folding protocol naturally leads to an efficient recursive lattice-based SNARK and an efficient PCD scheme. LatticeFold supports folding low-degree relations, such as R1CS, as well as high-degree relations, such as CCS. The key challenge is to construct a secure folding protocol that works with the Ajtai commitment scheme. The difficulty, is ensuring that extracted witnesses are low norm through many rounds of folding. We present a novel technique using the sumcheck protocol to ensure that extracted witnesses are always low norm no matter how many rounds of folding are used. Our evaluation of the final proof system suggests that it is as performant as Hypernova, while providing post-quantum security.
Paper Link: https://eprint.iacr.org/2024/257
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdf
A Mix Chart displays historical data of numbers in a graphical or tabular form. The Kalyan Rajdhani Mix Chart specifically shows the results of a sequence of numbers over different periods.
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...Edge AI and Vision Alliance
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/how-axelera-ai-uses-digital-compute-in-memory-to-deliver-fast-and-energy-efficient-computer-vision-a-presentation-from-axelera-ai/
Bram Verhoef, Head of Machine Learning at Axelera AI, presents the “How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-efficient Computer Vision” tutorial at the May 2024 Embedded Vision Summit.
As artificial intelligence inference transitions from cloud environments to edge locations, computer vision applications achieve heightened responsiveness, reliability and privacy. This migration, however, introduces the challenge of operating within the stringent confines of resource constraints typical at the edge, including small form factors, low energy budgets and diminished memory and computational capacities. Axelera AI addresses these challenges through an innovative approach of performing digital computations within memory itself. This technique facilitates the realization of high-performance, energy-efficient and cost-effective computer vision capabilities at the thin and thick edge, extending the frontier of what is achievable with current technologies.
In this presentation, Verhoef unveils his company’s pioneering chip technology and demonstrates its capacity to deliver exceptional frames-per-second performance across a range of standard computer vision networks typical of applications in security, surveillance and the industrial sector. This shows that advanced computer vision can be accessible and efficient, even at the very edge of our technological ecosystem.5th LF Energy Power Grid Model Meet-up Slides
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
Main news related to the CCS TSI 2023 (2023/1695)
An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
Energy Efficient Video Encoding for Cloud and Edge Computing Instances
Energy Efficient Video Encoding for Cloud and Edge Computing Instances
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-Efficiency
Freshworks creates AI-boosted business software that helps employees work more efficiently and effectively. Managing data across multiple RDBMS and NoSQL databases was already a challenge at their current scale. To prepare for 10X growth, they knew it was time to rethink their database strategy. Learn how they architected a solution that would simplify scaling while keeping costs under control.
Crafting Excellence: A Comprehensive Guide to iOS Mobile App Development Serv...
Crafting Excellence: A Comprehensive Guide to iOS Mobile App Development Serv...Pitangent Analytics & Technology Solutions Pvt. Ltd
Discover top-tier mobile app development services, offering innovative solutions for iOS and Android. Enhance your business with custom, user-friendly mobile applications.Recently uploaded (20)
Introduction of Cybersecurity with OSS at Code Europe 2024
Introduction of Cybersecurity with OSS at Code Europe 2024
The Microsoft 365 Migration Tutorial For Beginner.pptx
The Microsoft 365 Migration Tutorial For Beginner.pptx
AppSec PNW: Android and iOS Application Security with MobSF
AppSec PNW: Android and iOS Application Security with MobSF
Programming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup Slides
HCL Notes and Domino License Cost Reduction in the World of DLAU
HCL Notes and Domino License Cost Reduction in the World of DLAU
Choosing The Best AWS Service For Your Website + API.pptx
Choosing The Best AWS Service For Your Website + API.pptx
Astute Business Solutions | Oracle Cloud Partner |
Astute Business Solutions | Oracle Cloud Partner |
Generating privacy-protected synthetic data using Secludy and Milvus
Generating privacy-protected synthetic data using Secludy and Milvus
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...
zkStudyClub - LatticeFold: A Lattice-based Folding Scheme and its Application...
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdf
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdf
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
9 CEO's who hit $100m ARR Share Their Top Growth Tactics Nathan Latka, Founde...
9 CEO's who hit $100m ARR Share Their Top Growth Tactics Nathan Latka, Founde...
Energy Efficient Video Encoding for Cloud and Edge Computing Instances
Energy Efficient Video Encoding for Cloud and Edge Computing Instances
Nordic Marketo Engage User Group_June 13_ 2024.pptx
Nordic Marketo Engage User Group_June 13_ 2024.pptx
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-Efficiency
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-Efficiency
Overcoming the PLG Trap: Lessons from Canva's Head of Sales & Head of EMEA Da...
Overcoming the PLG Trap: Lessons from Canva's Head of Sales & Head of EMEA Da...
Crafting Excellence: A Comprehensive Guide to iOS Mobile App Development Serv...
Crafting Excellence: A Comprehensive Guide to iOS Mobile App Development Serv...
The chemical of reaction
- 1. Chemical Reaction CLASS / SEMESTER : VII / 2 JUNIOR HIGH SCHOOL