GCSEScienceWJECScience (Double Award)ChemistryRevision Notes

WJEC GCSE Science (Double Award): Chemistry
Revision Notes

Exam code: 3430

Concise resources for the WJEC GCSE Science (Double Award): Chemistry course.

Chemical Substances, Reactions & Essential Resources

Elements & Compounds

Chemical Symbols & Formulae

Relative Atomic Mass & Relative Molecular Mass

Percentage Composition

Separating Mixtures

Conservation of Mass

Evidence of a Chemical Reaction

Chemical Equations

Percentage Yield

Reacting Masses

The Avogadro Constant & the Mole

Atomic Structure

Atomic Number, Mass Number & Isotopes

The Periodic Table

Electronic Structure

Trends in the Periodic Table

Reactions of Alkali Metals

Testing for Hydrogen Gas

Reactions of Halogens

Testing Cations & Anions

Composition of Water

Sustainable Water Supply

Water Treatment

Fluoridation of Water

Solubility Curves

Water Softening

Benefits & Drawbacks of Hard Water

Determining Hardness in Water

Structure of the Earth

Plate Tectonics

Plate Boundaries

Carbon Dioxide & Sulfur Dioxide Emissions

Global Warming & Acid Rain

Testing for Oxygen & Carbon Dioxide

Determining the Rate of Reaction

Factors Affecting Rates

Hydrochloric Acid & Sodium Thiosulfate

Particle Theory

Rate of Reaction Using Gas Collection

Chemical Bonding, Application Of Chemical Reactions & Organic Chemistry

Properties of Substances

Metallic Bonding

Giant Ionic Structures

Covalent Bonding

Intermolecular Bonding

Diamond & Graphite

Carbon Nano-tubes & Graphene

Bulk Properties

Nano-scale Particles

Smart Materials

Hydrogen & Hydroxide Ions

Acids Reacting with Metals

Neutralisation of Acids

The Acid-Carbonate Reaction

Making Soluble Salts

Preparing Crystals of a Soluble Salt

Testing for Sulfate Ions

Acid-Base Titration

Metal Reactivity

Metal Displacement Reactions

Oxidation & Reduction

Extraction of Iron

Electrolysis of Molten Ionic Compounds

Oxidation & Reduction Using Electrons

Extraction of Aluminium

Properties of Metals

Transition Metals

Factors Affecting Extraction Processes

Exothermic & Endothermic Reactions

Energy Profiles

Bond Energy Calculations

Fractions in Crude Oil

Impact of the Oil Industry

Combustion of Hydrocarbons

Energy Density of a Fuel

Energy from Fuels

Hydrogen as a Fuel

The Fire Triangle

Cracking Hydrocarbons

Naming Alkanes & Alkenes

Isomerism in Hydrocarbons

Addition Polymerisation

Exam boards

Study tools

WJEC GCSE Science (Double Award) · Past Papers

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