KS4 Chemistry Chemical Changes

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Contents

Chemical Changes

Chemical Symbols, Formulae and Equations

• Chemical Symbol
• Chemical Formula
  • Moles
    • Relative Atomic Mass
  • Empirical Formula
    • Relative Formula Mass
• Concentration
  • Molarity
• Chemical Reaction
  • Conservation of Mass
  • Balanced Symbol Equation
    • State Symbols
  • Half Equation
• Limiting Reactants
• Yield
  • Percentage Yield

Gas Tests

• Testing for Carbon Dioxide
• Testing for Hydrogen
• Testing for Oxygen
• Testing for Chlorine

Chemistry of Acids

• Acid
  • Hydrogen Ions
• Neutral
• Base
  • Alkalis
    • Hydroxide Ions
• pH Scale
  • pH Indicator
  • Acidity
  • Neutrality
  • Alkalinity
• Neutralisation
  • Titration

GCSE Chemistry Required Practical: Titration

Common Neutralisation Reactions of Acids

• Acid + Metal → Metal Salt + Hydrogen
• Acid + Metal Oxide → Metal Salt + Water
• Acid + Metal Hydroxide → Metal Salt + Water
• Acid + Metal Carbonate → Metal Salt + Carbon Dioxide + Water

Reactivity Series

Reactivity

• Metals
• Metal Ions
• Positive Ions

Electrolysis

• Electrodes
  • Anode
  • Cathode
• Ion
  • Positive Ion
  • Negative Ion

Electrolysis of Molten Ionic Compounds

Electrolysis of Aqueous Ionic Compounds

GCSE Chemistry Required Practical: Electrolysis of a Solution

Redox Reactions

• Reduction
• Oxidation