AQA GCSE Combined Science Trilogy · 8464
Specification 5.1.1.1, 5.4.1.4, 5.4.2.1 · Paper 3
- Revise: Representing Chemical Reactions and Balancing Equations
An ion that remains unchanged during a reaction and can be cancelled from both sides when writing an ionic equation.
- Revise: Oxidation and Reduction via Electrons
- Revise: Reactions of Acids with Metals
An ion that remains unchanged during a reaction and is omitted from the net ionic equation.