Chemistry GCSE
Ionic equations
What Ionic equations means in Chemistry GCSE, as defined for AQA.
Definitions of Ionic equations
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Reference: AQA
The ionic equation for chloride is Ag⁺(aq) + Cl⁻(aq) → AgCl(s), and equivalent equations are written for bromide and iodide.
Equations in which only ions and molecules in solution or as gases or solids are shown, with state symbols where required.
Show which species gains and loses electrons, with the more reactive metal forming positive ions that enter the solution.
Equations that show only the ions that change, with spectator ions such as sulfate omitted.
Topics that use Ionic equations
- Halides (AQA GCSE)
- Oxidation and reduction in terms of electrons (HT only) (AQA GCSE)
- State symbols (AQA GCSE)
- The reactivity series (AQA GCSE)
Related terms
- Displacement reactions
- Electron loss and positive charge
- Electron loss as the basis of reactivity
- Extraction of metals with carbon
- Half equations
- Halide identification
- Link between ion formation and reactivity
- Metal and acid reactions
Using Ionic equations in the exam
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