Hydroxide ions
What Hydroxide ions means in Combined Science GCSE, as defined for AQA.
Definitions of Hydroxide ions
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Reference: AQA
Ions with the formula OH⁻ that lose one electron each and rearrange to form oxygen and water.
Ions written OH⁻ that are responsible for alkaline properties and for pH values above 7.
Topics that use Hydroxide ions
- Representation of reactions at electrodes as half equations (HT only) (AQA GCSE)
- The pH scale and neutralisation (AQA GCSE)
Related terms
- Acids
- Anode
- Conservation of charge and mass
- Electrolysis
- Half equation
- Half equations
- Half equations and balancing
- Ionic reactions in solution
Using Hydroxide ions in the exam
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