Josh physical + chemical change
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A physical change alters the form or shape of a substance but does not change its chemical composition, while a chemical change produces one or more new substances. Examples of chemical changes include burning a log or frying an egg, which change color and properties. Chemical changes are important because they underlie processes like producing clothing and food as well as energy generation in living things.
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Physical change or chemical change
A physical change can be reversed and only alters the shape or form of the material, while a chemical change produces new substances that cannot be reversed back to the original forms. Toasting bread and burning wood are examples of chemical changes, as the original substances cannot be recovered, while shaping clay into pots is a physical change since it remains clay just in a different shape. Determining if a change is physical or chemical is not always clear cut and may require microscopic examination in some cases.
Physical vs chemical change
Physical changes alter the size, shape, or form of matter but do not create new substances, and can often be reversed, such as freezing and melting water or chopping celery. Chemical changes result in new substances through molecular rearrangements that cannot be undone, like rust forming on nails, fireworks exploding, or cookies baking. Chemical reactions exhibit telltale signs like producing gas, releasing heat, forming precipitates, or causing color changes.
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.
Changes in Matter
Physical changes alter the state or form of a substance without changing its chemical identity, and are reversible. Chemical changes transform one or more substances into new substances with different properties, are indicated by color changes, formation of precipitates or gas bubbles, production of heat or light, and are not easily reversible. Physical and chemical changes can be distinguished by whether the identity of the substance is conserved and if the change is reversible.
Changes around us
The document lists and describes examples of physical and chemical changes. Physical changes include changes in state through melting, boiling, evaporation, or freezing, which do not alter the chemical makeup of the substance. Chemical changes result in the formation of new chemical substances through chemical reactions, such as burning, rusting, cooking, and digestion.
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.
Physical Or Chemical Change Picture Quiz
A picture quiz to get students to identify chemical changes and physical changes. Could be used as an introduction to a lesson or as an assessment of their learning afterwards.
PHYSICAL AND CHEMICAL CHANGE
This document discusses the differences between physical and chemical changes. Physical changes can be easily undone and do not change the substance's composition, though the substance's state or the arrangement of its molecules may change. Chemical changes result in a new substance through molecular rearrangement and cannot be easily reversed. Examples of physical changes include breaking or cutting an object, while examples of chemical changes include burning wood or digesting food.
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Physical change or chemical change
A physical change can be reversed and only alters the shape or form of the material, while a chemical change produces new substances that cannot be reversed back to the original forms. Toasting bread and burning wood are examples of chemical changes, as the original substances cannot be recovered, while shaping clay into pots is a physical change since it remains clay just in a different shape. Determining if a change is physical or chemical is not always clear cut and may require microscopic examination in some cases.
Physical vs chemical change
Physical changes alter the size, shape, or form of matter but do not create new substances, and can often be reversed, such as freezing and melting water or chopping celery. Chemical changes result in new substances through molecular rearrangements that cannot be undone, like rust forming on nails, fireworks exploding, or cookies baking. Chemical reactions exhibit telltale signs like producing gas, releasing heat, forming precipitates, or causing color changes.
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.
Changes in Matter
Physical changes alter the state or form of a substance without changing its chemical identity, and are reversible. Chemical changes transform one or more substances into new substances with different properties, are indicated by color changes, formation of precipitates or gas bubbles, production of heat or light, and are not easily reversible. Physical and chemical changes can be distinguished by whether the identity of the substance is conserved and if the change is reversible.
Changes around us
The document lists and describes examples of physical and chemical changes. Physical changes include changes in state through melting, boiling, evaporation, or freezing, which do not alter the chemical makeup of the substance. Chemical changes result in the formation of new chemical substances through chemical reactions, such as burning, rusting, cooking, and digestion.
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Chemical Changes
A chemical change is a change where one or more new types of matter form as the original materials react and combine in new ways. Some signs that a chemical change has occurred include a change in color, gases being given off, or a change in temperature without external heating or cooling. Common examples of chemical changes provided are burning, rusting, wood ash being left after burning, and fruits or metals oxidizing and changing color when exposed to air.
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Physical and chemical change
This document discusses the difference between physical and chemical changes. Physical changes involve alterations to a substance's physical properties like size, shape, or phase without changing its chemical composition. Examples given are melting ice, tearing paper, and blowing a balloon. Physical changes are reversible. Chemical changes result in new substances forming with different chemical compositions and properties. Examples of chemical changes include rusting iron, burning paper, and ripening fruits. Chemical changes are irreversible.
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Physical and chemical change
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1. CHANGE
Any change in the scientific mosaic, i.e. a transition from one accepted theory to another or from one employed method to another. (Source: Scientific Change - Encyclopedia of Scientonomy) .
It can be of two types:
1. Chemical Change
2. Physical Change
CHEMICAL CHANGE:
Change in shape and size of a substance by forming a new substance with new properties.
The new substance formed cannot be turned back into its original state.
PHYSICAL CHANGE:
Change in shape and size of a substance that does not alter the properties of a substance.
A substance formed may be turned back into its original state.
Fact: The burning of the candle represents both physical and chemical change. As it melts physically it changes its states, while chemically CO2 (a gas) release during the burning of the candle.
physical and chemical changes
A chemical change alters the chemical makeup of a substance, creating a new substance with different properties through a chemical reaction where matter is neither created nor destroyed. Examples of chemical changes include fire and mixing baking soda and vinegar. A physical change only modifies a substance's size, shape, volume, or state of matter without chemically altering its makeup, such as melting ice, breaking glass, or chopping wood.
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A physical change is reversible and does not alter the chemical composition of a substance. Examples include water changing between liquid, solid, and gas states or wood being shaped into a baseball bat, as it remains chemically wood. A chemical change is irreversible and produces substances with different chemical compositions than the original, such as wood burning to ash or bread toasting. Some changes can be either physical or chemical depending on conditions, and determining the type of change may require microscopic examination, with an irreversible change generally indicating a chemical process occurred.
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1. Chemical Change
2. Physical Change
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Change in shape and size of a substance by forming a new substance with new properties.
The new substance formed cannot be turned back into its original state.
PHYSICAL CHANGE:
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A substance formed may be turned back into its original state.
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physical and chemical changes
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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 chemical compositions through rearrangement of atoms, as evidenced by production of a gas, change in temperature, formation of a precipitate, or color change. Common chemical changes are rusting, tarnishing, burning, cooking, and digesting.
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.
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Oxidation occurs when metals react with oxygen in the air, changing their atoms and forming rust on iron. Apples and potatoes also oxidize when cut or peeled as they combine with oxygen and turn brown.
Fermentation is a chemical reaction where fungi or bacteria change organic substances, producing alcohol or lactic acid without using oxygen. It is used to make foods like cheese and bread, and drinks like wine. Fermentation also helps decompose fruits and vegetables and can preserve foods.
Combustion is a chemical reaction that produces energy in the form of heat and light. It occurs when fuels like wood, gas, or oil react with oxygen and form new substances like ash and smoke. During wood combustion, fuel turns
Chemical reactions and energy
Oxidation occurs when metals react with oxygen in the air, changing their atoms and forming rust on iron. Apples and potatoes also oxidize when cut or peeled as they combine with oxygen and turn brown.
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This document discusses physical and chemical changes in matter. It defines physical changes as changes in state or form without a change in chemical composition, such as water freezing to ice. Chemical changes result in new substances forming through chemical reactions, as seen when iron rusts. The document outlines several properties and signs that can indicate if a physical or chemical change has occurred, such as changes in density, melting point, or the production of gas.
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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. Examples of physical changes discussed include tearing paper, molding clay, and folding a handkerchief. Chemical changes discussed include rusting iron, souring milk, and ripening fruits. A physical change alters the appearance of matter but does not change its chemical composition, while a chemical change produces new substances. The document seeks to demonstrate the difference between physical and chemical changes in various examples and situations.
physicalchemicalchange.pptx
A physical change alters the form of a substance but does not change its chemical composition. Examples of physical changes include crushing an aspirin, cutting paper, melting ice, and sawing wood. A chemical change results in one or more new substances being formed because the chemical composition of the original substance has changed. Examples of chemical changes include burning logs, dissolving sugar in tea, and burning rocket fuel.
Physical and Chemical Changes
This document discusses the differences between physical and chemical changes. A physical change alters a substance's physical properties like shape, size or state, but does not change its chemical identity. Examples include melting ice, freezing kool-aid, and tearing paper. A chemical change creates new substances through chemical reactions, evidenced by signs such as color changes, bubbling, and heat production. Chemical changes include burning wood and rusting metal. The document instructs students to provide everyday examples of both physical and chemical changes.
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Unit b matter and chemical change notes(physical & chemical changes)
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physical and chemical property and physical and chemical change
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This document provides a template for a grid to compare different modes of transportation in Canada, including dogsled, canoe, wagon, railway, bike, automobile, BC Ferry, and airplane. The grid asks the learner to fill in details about each mode such as the date it was first used in Canada, how and where it was used, the benefits to people, and how it is used now.
Ancient Greece
Ancient Greece was a civilization that lasted from the 8th to 6th centuries BC to the 600s AD. Society was stratified, with upper, middle, and lower classes. Men were citizens and held public roles, while women were confined to domestic life. Marriage was usually arranged, and divorce was possible. Families were patriarchal, with husbands and fathers in authority. Children were raised communally in Sparta but by mothers in Athens. Education differed by gender and class. The arts, including architecture, sculpture, and music flourished. Religion centered on the Olympian gods and their myths. Festivals honored the gods through processions, sacrifices, and competitions. Upon death, souls went to Hades and bodies received fun
Isabel Ancient Greece
Daily Life in Ancient Greece was divided into many periods and consisted of complex social structures. Citizens had rights not afforded to women, foreigners, or slaves. Family life was patriarchal and centered around the oikos or household. Children were raised communally in Sparta but had more schooling in Athens. Religion heavily influenced all aspects of life and the Greeks believed in many gods and held various festivals in their honor.
Farming inquiry
Farming originated around 8000 BCE in the Fertile Crescent region. The first crops farmed were cereal grains like wheat and barley, as well as pulses and the bottle gourd vegetable. Sheep and goats were among the earliest domesticated animals, as they meet the criteria of being able to be bred and kept in captivity without being aggressive or panicking.
Farming
Farming is believed to have originated around 10,000 years ago in East Africa and the Middle East by First Nations peoples at the end of the Ice Age, according to scientists. The first crops grown were likely wheat and barley, as their seeds are commonly found from that era. Dogs were possibly the first domesticated animals, kept as pets starting 13,000-30,000 years ago, while sheep, goats, cattle and pigs were domesticated for food around 9000-7000 BC.
History of farming
Farming originated around 10,000 BC in an area known as the Fertile Crescent. People in this region began deliberately planting seeds from local grasses and grains that they gathered, such as barley and wheat, aided by favorable climate conditions. One of the earliest farming settlements was Catalhoyuk in present-day Turkey. Farming then spread to other parts of the world and involved domesticating animals like goats, sheep and pigs to provide food, fiber and labor. Over time, humans cultivated a wider variety of crops and domesticated additional animals, advancing early agriculture.
Inquiry questions
The first farming occurred around 10,000 years ago in areas like China, the fertile crescents of India, Egypt, and Western Asia. The earliest crops grown were wheat, barley, and peas, though the specific crops depended on location. Squash was also grown around this time. The first domesticated animals were dogs, which were used for hunting and protection of human tribes. Dogs evolved from wolves and today there are over 200 purebred dog species.
Inquiry questions
The first farming occurred around 10,000 years ago in areas like China, the fertile crescents of India, Egypt, and Western Asia. The earliest crops grown were wheat, barley, and peas, though the specific crops depended on location. Squash was also grown around this time. The first domesticated animals were dogs, which were used for hunting and protection of tribes. Dogs evolved from wolves and today there are over 200 purebred dog species.
Inquiry Questions
Farming first emerged in Egypt around 9000 BC, with the domestication of dogs and cultivation of grains such as wheat. Early Egyptian farmers domesticated dogs and grew crops like grains.
Ancient china tommy h
This document provides an overview of ancient Chinese society during the Warring States period from 475 BC to 221 BC. It includes sections on the social structure, housing, family life, education, religion, art, music and festivals of the time. The wealthy lived in large houses with servants while common people lived in simple mud homes. Boys could attend school but education was mostly limited to the rich. Families valued sons over daughters. Marriage was arranged by parents. Art forms included music, calligraphy, and painting with ink. The mid-autumn festival involved eating mooncakes and admiring the moon.
Ancient china- Tommy H
This document provides an overview of ancient Chinese society during the Warring States period from 475 BC to 221 BC. It includes sections on the social structure, housing, family life, education, religion, art, music and festivals of the time. The wealthy lived in large houses with servants while common people were charged by the emperor. Boys could attend school but girls were expected to help with household duties. Marriage was arranged by parents and Buddhism was just being introduced. The arts flourished with music, painting, embroidery and moon cake festivals.
Daily life in ancient china
The Han dynasty ruled China from 206 BC to 220 AD. It expanded China's territory and unified the culture. The Han dynasty is known for establishing the Silk Road for trade between China and Rome. Archaeologists have also learned about Han dynasty life by artifacts like small clay models of homes and belongings buried with the dead. The social structure remained largely the same as previous dynasties with the emperor at the top and peasants at the bottom. Wealthy Han residents built large homes and decorated their family tombs with stone lions.
Kenny richard socials
The Vikings originated from Norway, Sweden and Denmark between the 8th and 11th centuries. They were known for their naval skills and raids across Europe. The document provides details about Viking society, including their social classes, homes, food, family life, religion and gods. It also describes Viking art, music, holidays and clothing. Overall, the Vikings established settlements throughout Northern Europe and had a significant impact on medieval history.
Rico_Socials
Ancient Greece developed around 6000 BC when people settled in villages and began farming. Around 2000 BC, invaders from West Asia introduced bronze, the potter's wheel, and the Greek language. Common people in ancient Greece lived with their families in simple stone or wood houses with a courtyard, while wealthy homes had multiple rooms. Marriage was usually arranged, and women married young and focused on domestic duties. Children received some education, with boys learning academics and girls learning domestic skills. Ancient Greek culture included art, theatre, music and worship of the Olympian gods led by Zeus.
Andres charles socials
The document provides a bibliography of websites about various topics relating to ancient Egypt, including maps, social structure, housing, food, family life, marriage, childhood, education, religion, clothing, art, music, and conclusions. The bibliography contains 17 sources with URLs about these topics of ancient Egypt.
Nick quintin socials
The document provides information on various aspects of life in Ancient Greece such as social structure, housing, food, childhood, and clothing. It describes the social hierarchy, with free men who owned land at the top and slaves at the bottom. Houses were typically made of stone or clay, with separate living areas for men and women. The Greeks ate a diet centered around seafood, cheese, olives, and drank wine. Childhood was difficult, with high infant mortality and many children raised as slaves. Clothing was minimal for men but women covered more of their bodies. The document includes pictures and websites used as sources.
Sarah_Megan_socials
This document summarizes the life of a young woman named Giovanna who lives in ancient Greece. It describes her civilization, social structure, home life, diet, family roles, and marriage customs. The civilization started around the 8th-6th century BC and the oracle has warned of an impending battle with the Romans. Giovanna draws pictures to document her daily life, including her simple two-room home, meals consisting of wheat, olive oil, fish and wine, and the traditional roles of women to help with chores and raise families. Marriage was arranged by families, with the bride moving to her husband's home after a ceremony involving a chariot ride and symbolic fruit eating.
Candice socials
The Han Dynasty ruled China from 206 BC to 220 AD. It followed the Qin Dynasty and was a period of economic prosperity and territorial expansion. The Han emperors established a strong central government and bureaucracy. Society was organized into social classes, including scholars, peasants, artisans, and merchants. Families, Confucian values, and ancestor worship were important cultural aspects of Han Dynasty China.
Kate rachel socials
The ancient Egyptians had a stratified social structure with the pharaoh at the top as a god-king. After the pharaoh came nobles, priests, soldiers, and scribes, followed by merchants, artists, farmers, and slaves at the bottom. Children helped with chores and some boys attended school to learn reading, writing, and arithmetic. Religion was very important in ancient Egypt and centered around many gods with the pharaoh seen as representing Horus.
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This document provides background information on daily life in Ancient Greece. It describes the various time periods of Ancient Greek civilization from 800 BC to 146 BC. It then covers several aspects of Greek society including social structure, housing, food, family life, marriage, childbirth, childhood, education, religion, and clothing. Key points include the division of Greek society into citizens and slaves, the roles of men and women, education being limited to boys, and the dominant religion being Greek mythology centered around 12 main gods.
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Josh physical + chemical change
- 3. How Can you tell if a chemical change has occurred #1: A new color appears #2: Heat, light, or sound is given off (or absorbed). #3: Bubbles of gas are formed. A new odour may be noticed #4: A solid material (called a precipitate) forms in a liquid #5: The change is difficult or impossible to reverse