Chemistry Welcome to the Chemistry keypoint page. Use the titles below to browse around. Search for: Definition of Chemistry Branches of Chemistry Reasons why we study chemistry Definition of Matter States of matter Properties of Matter Difference Between Chemical and Physical Changes Definition of Element Definition of a Compound Features/Characteristics of a Compound Definition of a Mixture Features/Characteristics of Mixtures Differences Between Compound and Mixture Types of Separation Techniques Definition of Atom Definition of Molecule Definiton of Ion Definition of Radical First Twenty Elements What is Relative atomic mass What is Relative Molecular Mass What is Molar mass Definition of Mole Moles Calculation Laws of Chemical Combination Definition of valency Dalton’s Atomic Theory Criticisms of Dalton’s Atomic Theory Structure of an Atom Quantum Number Arrangement of Electrons in an Atom Isotopy Periodic Table Periodic Trends Chemical Combination Meaning Electrovalent Bonding Covalent Bonding Metallic Bonding Hydrogen Bonding Vander Wail Forces Three States of Matter Kinetic Theory of Gases Boyle’s Law Charle’s Law Pressure’s Law Ideal Gas Equation Dalton’s Law of Partial Pressure Gay-Lussac’s Law of Combining Volume Graham’s Law of Diffusion Avogadro’s Law Definition of an Acid Classification of Acids Basicity of an Acid Physical Properties of Acid Chemical Properties of Acid Methods of Preparing Acids Applications of Acids Definition of Base & Alkali Physical Properties of Bases Chemical Properties of Bases Uses of Bases Definition of Salt Types of Salts Uses of Salts Method of Salt Preparation Meaning of Efflorescent Substances Meaning of Deliquescent Substances Meaning of Hygroscopic Substances Properties Of Salts PH Equation Carbon Allotropes of Carbon Physical Properties of Diamond Uses of Diamond Graphite Physical Properties of Graphite Uses of Graphite Coal Types of Coal Destructive Distillation of Coal Charcoal Carbon Black (Soot) Oxides of Carbon Laboratory Preparation of CO2 Physical Properties of CO2 Chemical Properties of CO2 Test for CO2 Uses of CO2 Carbon (ii) Oxide [CO] Laboratory Preparation for Carbon (ii) Oxide [CO] Physical Properties of CO Chemical Properties of CO Test for CO Uses of CO: Types of Fuel Gases Trioxocarbonates Chemical Reactions Definition Types of Reaction Catalyst Definition Characteristics of a catalyst Oxidation and Reduction Reactions Test for Oxidizing Agents Test For Reducing Agent Rules In oxidation number Electrolysis Definition What is an Electrolyte Electrodes Meaning What Happens During Electrolysis Factors that Affect Discharge of Ions During Electrolysis Faraday’s Laws of Electrolysis USES/Applications of Electrolysis Electrochemical Cells Chemical Thermodynamics Types of Reaction Laws in Chemical Thermodynamics Factors that Affect Rate of Chemical Reactions Chemical Equilibrium Laws of Thermodynamics Pollution Definition Types of Pollution Air Pollution Effects of Air Pollution Control of Air Pollution Water Pollution Effects of Water Pollution Control of Water Pollution Water Definition Treatment of Water For Town Use Types of Water Temporary Hardness and Permanent Hardness Ways to Remove Hardness Advantages of Hard Water Disadvantages of Hard Water Physical Properties of Water Chemical Properties of Water Solutions and Solubility Types of Solvent Types of Solutions (based on particle size) Distinction between True and False Solutions Classification of Solution based on the amount of Solute Solubility Salt Solubility Curve Radioactivity Definition Types of Radiation Detection of Radiation Half-life in Radiation Nuclear Fusion Nuclear Fission Applications of Radioactivity Hydrogen Laboratory Preparation of Hydrogen Physical Properties of Hydrogen Chemical properties of Hydrogen Test For Hydrogen Isotopes of Hydrogen Uses of Hydrogen Chlorine Laboratory Preparation of Chlorine Physical Properties of Chloride Chemical Properties of Chlorine Test For Chlorine Uses of Chlorine HydroChloric Acid (HCl) Chlorides (CL-) Oxygen Physical Properties Of Oxygen Chemical Properties Of Oxygen Test For Oxygen Uses Of Oxygen Nitrogen Physical Property Of Nitrogen Chemical Properties Of Nitrogen Uses Of Nitrogen Oxides Of Nitrogen Physical Property of N2O Chemical Properties of N2O Test For N2O Uses Of N2O Nitrogen (II) Oxide (NO) Physical Properties Of NO Chemical Properties Of NO Test For Nitrogen (ii) Oxide Nitrogen (IV) Oxide NO2 Physical Properties Of NO2 Chemical Properties Of NO2 TrioxoNitrate (V) Acid HNO3 Physical Properties Of HNO3 Chemical Properties Of HNO3 Trioxonitrate (v) Salts (NO3) Test For Trioxonitrates Ammonia Physical Properties of Ammonia Chemical Properties of Ammonia Test for Ammonia Uses of Ammonia Sulphur Differences Between Rhombic and Monoclinic Sulphur Physical Properties of Sulphur Chemical Properties of Sulphur Uses of Sulphur Hydrogen Sulphide (H2S) Physical Properties of H2S Chemical Properties of H2S Test for H2S Uses of Hydrogen Sulphide (H2S) Sulphur (iv) oxide (SO2) Physical Properties of SO2 Chemical Properties of SO2 Tests For SO2 Uses Of SO2 Tetraoxosulphate (VI) Acid Physical Properties Of H2SO4 Chemical Properties of H2SO4 Uses Of H2SO4 Test For Trioxosulphate (iv) SO4 2- Metal Definition Physical properties of metals Chemical properties of metals Extraction of Metals Principles of metal extraction Test for metals Metallic ions (Cations) Organic Chemistry Hydrocarbon Petroleum (crude oil) Homologous series Characteristics of Homologous series Alkane Methane (CH4) Physical properties of Methane Chemical properties of methane Use Of Methane Alkenes Ethene (C2 H4) Physical Property Of Ethene Chemical Properties of Ethene Uses of Ethene Alkynes Ethyne Physical Properties of Ethyne Chemical Properties of Ethyne Test For Unsaturation Uses of Ethyne Alkanols Classification of Alkanols Ethanol Preparation of Ethanol Physical Properties of Ethanol Chemical Properties of Ethanol Uses of Ethanol Alkanoic Acids Classification of Alkanoic Acids Ethanoic Acid Physical Properties of Ethanoic Acid Chemical Properties of Ethanoic Acid Uses of Ethanoic Alkanoates Ethyl Ethanoate Physical Properties of Ethyl Ethanoate Chemical Properties of Ethyl Ethanoate Uses of Esters Fats and Oils Differences Between Fats and Oils Properties of Fats and Oils Test for Fats and Oil Detergent Carbonyl Group Alkanal Alkanone Carbohydrates Classification of Carbohydrate Test For Starch Test For Simple Sugar