Chemistry Unit 2 Part 5 - The Representative Elements
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The document summarizes the organization and properties of the modern periodic table. It describes the three main groups of elements - metals, nonmetals, and metalloids. Key representative elements are then discussed from groups 1A through 2A, including their physical properties and common compounds. The carbon, nitrogen, oxygen, halogen and noble gas groups are also summarized. Transition metals and inner transition metals are introduced at the end.
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Noble metal to nobel prize
STATE TO EXPLAIN.....
Noble Metal
Nobel prize
Nobel Laureates Nobel Prize for Noble Metal
Advance Metal catalyzed reaction
Removal of Heavy Metals from Aqueous Solution Using Ion Exchange Resin MBHPE-TKP
The aim of this study is to synthesis of TKP (MBHPE-TKP) resin for the removal of heavy metals from aqueous solution. Ion exchange resins are polymers that are capable of exchanging particular ions within the polymer with ions in a solution that is passed through them. This ability is also seen in various natural systems such as soils and living cells. The synthetic resins are used primarily for purifying water, but also for various other applications including separating out some elements. Factorial design of experiments is employed to study the effect of above factors pH, time and sorbent used. The new synthesized resins i.e. MBHPE–TKP is hydrophilic and biodegradable, so after effluent treatment used resins can be disposed off without facing any environmental problem .This study focuses on synthesis of new cation exchange resin (MBHPE – TKP) and developing method for treatment of highly contaminated industrial effluents.
Chapter 6 Land and Its Resources
This document summarizes key information about minerals, metals, and natural fuel resources found in Earth's crust. It discusses the characteristics of minerals like their chemical composition and properties. Common minerals are described along with the chemical reactions of metals and non-metals. Natural fuel resources like coal, petroleum, and natural gas are formed from decayed organic matter and are important to Malaysia's economy. Efficient use of these resources through practices like energy conservation and recycling can help reduce consumption.
Group 2 the periodic table
The document summarizes the elements in Group 2 of the periodic table. It discusses their common properties, including having two electrons in their valence shell giving them an oxidation state of +2, which allows them to easily lose electrons and form ionic bonds. It then provides details on each individual element, including their discovery dates, common isotopes, typical oxidation states, important industrial and biological uses, and examples of common reactions like forming oxides, hydrides, and halides with oxygen, hydrogen, and halogens respectively. The heavier Group 2 elements like calcium, strontium and barium are more reactive than the lighter ones like magnesium and beryllium.
24.2 part2docx
The document discusses several key points about nitrogen, oxygen, sulfur, and their compounds:
1) Nitrogen makes up 80% of air and is essential for living things. It is obtained commercially from air through fractional distillation or by removing oxygen over hot coke.
2) Oxygen makes up 23% of the atmosphere and is vital for life. It is industrially produced by fractionally distilling air. Ozone is a reactive form of oxygen that protects from UV rays but contributes to smog.
3) Sulfur exists in many forms and reacts with most elements. It is mined as free sulfur near the Gulf of Mexico. Sulfuric acid is very important and
Precious elements found on earth and their uses
Rhodium, platinum, gold, and osmium are precious metals found on Earth. Rhodium is used in catalytic converters, platinum is used in catalytic converters and jewelry, gold is used in jewelry, coins, and electronics, and osmium is used as a catalyst.
Mercury in Restorative Dentistry
Introduction
History
Manufacturing of mercury
Properties :- General
Physical Properties.
Chemical Properties.
Compounds
Inorganic
Organic
Elemental (Vapour)
Occurrence
Applications:-
Medicine and Dental
Laboratory uses
Other uses
Mercury cycle
Mercury in dental amalgam
Amalgam reactions
Amalgam wars
PHYSIOLOGICAL Hg CYCLE
Toxicity and safety
Mercury toxicity levels
Effects of mercury toxicity on body
- Allergy
- Acute poisoning
-Chronic poisoning
-Oral cavity problems
- Acrodynia
-Minimata disease
-Hunter-Russell syndrome
- Erethism
Treatment
Laboratory test
Methods to detect mercury vapor release.
Mercury exposure in dental practice
Mercury Management.
ADA Dental Mercury hygiene recommendation.
Amalgam waste management.
Conclusion.
References.
Previous year questions.
Mercury in Restorative Dentistry
Introduction
History
Manufacturing of mercury
Properties :- General
Physical Properties.
Chemical Properties.
Compounds
Inorganic
Organic
Elemental (Vapour)
Occurrence
Applications:-
Medicine and Dental
Laboratory uses
Other uses
Mercury cycle
Mercury in dental amalgam
Amalgam reactions
Amalgam wars
PHYSIOLOGICAL Hg CYCLE
Toxicity and safety
Mercury toxicity levels
Effects of mercury toxicity on body
- Allergy
- Acute poisoning
-Chronic poisoning
-Oral cavity problems
- Acrodynia
-Minimata disease
-Hunter-Russell syndrome
- Erethism
Treatment
Laboratory test
Methods to detect mercury vapor release.
Mercury exposure in dental practice
Mercury Management.
ADA Dental Mercury hygiene recommendation.
Amalgam waste management.
Conclusion.
References.
Previous year questions.
24.2 part 2pptx
Nitrogen and oxygen are important nonmetals that are essential for living things. Nitrogen makes up 78% of the atmosphere as N2 gas but must be "fixed" by bacteria to be used by most organisms. It is obtained commercially by fractional distillation of air or by removing oxygen from air over hot coke. Nitrogen is used to make ammonia and nitric acid, which are used in fertilizers and explosives. Oxygen makes up 23% of the atmosphere and is vital for animal respiration. It is obtained industrially by fractionally distilling liquefied air. Oxygen is used in steel production, pigments, rocket fuel, medicine, and other industrial processes. Sulfur is a yellow solid
Nitrogeno y sodio
Nitrogen and sodium are both common elements. Nitrogen is a colorless, odorless gas that makes up 78% of the atmosphere. It is found in many compounds including ammonia and nitric acid. Nitrogen forms very strong bonds that are difficult to break, but releasing energy when burned. Sodium is a soft, silvery metal that is highly reactive and burns with a yellow flame. It is found in sea salt and used to make sodium chloride, as well as other compounds like sodium hydroxide. Both nitrogen and sodium are abundant in nature and have many industrial applications.
ALKALI METALS.pptx
The document summarizes the properties and characteristics of the alkali metals, which are the Group 1 elements on the periodic table. They include lithium, sodium, potassium, rubidium, cesium, and francium. The alkali metals are soft, silvery-white metals that form strongly alkaline solutions when reacted with water. They have low densities and melting/boiling points that decrease down the group. The metals are highly reactive and must be stored in oil to prevent reaction with air. Their only industrial use is in compounds, with applications like batteries, ceramics, soap production, and fertilizers.
alkalimetals-230627195036-16395e02.pdf
The document summarizes the properties and characteristics of the alkali metals, which are the Group 1 elements on the periodic table. They include lithium, sodium, potassium, rubidium, cesium, and francium. The alkali metals are soft, have low melting points, form alkaline hydroxides when reacted with water, and are highly reactive. They are commonly used in batteries, fertilizers, glass, and other applications depending on the specific metal.
Matter and elements
The document discusses various elements and their properties. It describes carbon as the most important element, which can form long chains and complex molecules, some of which are living matter. Gold is described as the most beautiful element, being metallic yet colorful and non-reactive. Mercury is identified as the most fascinating element as it is liquid at room temperature, though toxic. Iron is labeled the most useful element due to its versatility when alloyed. The document also notes that hydrogen is the most abundant element in the universe.
Introduction to Nanotechnology.pdf
The document discusses various materials including metals, ceramics, polymers, composites and nanomaterials. It covers topics such as the properties and structures of different materials, advanced materials, materials for energy applications, and techniques for materials synthesis and characterization. Various material types are discussed along with their common applications and importance in technological areas.
Similar to Chemistry Unit 2 Part 5 - The Representative Elements (20)
Removal of Heavy Metals from Aqueous Solution Using Ion Exchange Resin MBHPE-TKP
Removal of Heavy Metals from Aqueous Solution Using Ion Exchange Resin MBHPE-TKP
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Physical Characteristics Of Gases
The document summarizes the kinetic molecular theory and gas laws relating pressure, temperature, volume and amount of gases. It defines key terms like ideal gas, diffusion and effusion. The kinetic molecular theory has 5 assumptions including gases being made of particles in random motion with no interparticle forces. Gas laws discussed include Boyle's law, Charles' law, Gay-Lussac's law and combined gas law. Dalton's law of partial pressures states the total pressure of a gas mixture equals the sum of partial pressures of individual gases.
Unit 5 Part 7 Moles Grams And Liters
This document discusses several key concepts related to moles, grams, and liters in chemistry:
1) The gram atomic mass is the mass of one mole of an element in grams, and the gram formula mass is the mass of one mole of a compound by adding the gram atomic masses of its elements.
2) Conversions between moles and grams use the gram atomic/formula mass - moles are multiplied by mass to get grams, and grams are divided by mass to get moles.
3) One mole of any gas occupies 22.4 liters at standard temperature and pressure (0°C and 1 atmosphere). Volume can be converted to moles by dividing liters by 22.
Unit 5 Part 6 The Mole
The document discusses how chemists measure and count substances at the atomic level. It introduces the mole as the unit chemists use to count representative particles like atoms and molecules. The mole is based on Avogadro's number, which states that one mole of a substance contains 6.02 x 1023 representative particles. Examples are given for calculating the number of atoms or moles of a substance using its formula and Avogadro's number.
Unit 5 Part 3 Aqueous Solutions
The document discusses reactions that occur in aqueous solutions, including:
- Ionic compounds dissociate into ions, while polar molecules do not.
- Double replacement reactions can produce precipitates, though not all substances that form precipitates will come out of solution.
- Ionic equations represent reactions in solution and distinguish between spectator and participating ions.
- Examples are provided of writing balanced chemical equations, complete ionic equations, and net ionic equations for precipitation reactions, acid-base neutralizations, and reactions forming gases.
- Multiple reactions can be combined and shown as a single overall reaction by crossing out common substances.
Unit 5 Part 2 Types Of Chemical Reactions
This document discusses 5 main types of chemical reactions:
1. Composition reactions involve two or more reactants forming a single product.
2. Decomposition reactions involve a single reactant breaking down into multiple products.
3. Single replacement reactions involve one element displacing another from a compound.
4. Double replacement reactions involve ion exchange between two ionic compounds.
5. Combustion reactions involve burning a substance in oxygen, usually forming water and carbon dioxide.
Unit 5 Part 1 - Chemical Change
This document provides an overview of chemical reactions, including:
- Chemical reactions involve chemical changes that produce new substances, following the law of conservation of mass.
- Chemical equations are used to represent chemical reactions, showing reactants, products, and the amounts of each through values and symbols.
- There are three ways to write chemical reactions: word equations, skeleton equations, and balanced chemical equations, with balanced being the preferred method.
Chemistry Unit 2 Part 4 - Development and Organization of the Periodic Table
The document discusses the development and organization of the periodic table. It describes how early scientists like Lavoisier, Newlands, Mendeleev, and Moseley contributed to organizing the known elements. Mendeleev arranged elements by atomic mass and was able to predict properties of undiscovered elements. Later, Moseley determined that atomic number provided a better ordering principle. The periodic table now arranges all known elements according to their atomic number and groups elements with similar properties together.
Chemistry Unit2 Part3 - Elements Compounds and Mixtures
This document discusses the classification of matter as elements, compounds, or mixtures. It defines mixtures as being made of two or more substances that can be separated by physical means. Compounds are pure substances that cannot be broken down by physical changes but can be broken down by chemical changes. Elements are substances made of only one type of atom that cannot be broken down further. The document provides examples of different types of mixtures and separation techniques, and explains the law of definite proportions for compounds.
Chemistry Unit 2 Part 2 - Changes in Matter
This document discusses physical and chemical changes in matter and provides examples to help students understand the key differences:
- Physical changes alter the physical properties of a substance without changing its chemical composition, such as changes of state between solid, liquid and gas, or cutting and crushing.
- Chemical changes involve chemical reactions that alter the molecular structure and create new substances, like rusting, burning, or digestion.
- The rock cycle and digestion process involve both physical changes (breaking rocks or movement through the digestive system) and chemical changes (chemical weathering or digestion of food).
Chemistry Unit 2 Part 1
This document discusses different types of properties and changes in matter. It defines extensive and intensive properties, with examples like mass and density. Physical properties can be observed without changing a substance's identity, while chemical properties involve changes in a substance's composition or structure. Physical changes alter a substance's state or form without changing its chemical makeup, like phase changes between solid, liquid and gas. Chemical changes form new substances through chemical reactions. All changes require a transfer of energy.
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Chemistry Unit 2 Part 4 - Development and Organization of the Periodic Table
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
ABSTRACT: A prima vista, un mattoncino Lego e la backdoor XZ potrebbero avere in comune il fatto di essere entrambi blocchi di costruzione, o dipendenze di progetti creativi e software. La realtà è che un mattoncino Lego e il caso della backdoor XZ hanno molto di più di tutto ciò in comune.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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