Combined Science GCSE
Acids, bases and alkalis
What Acids, bases and alkalis means in Combined Science GCSE, as defined for AQA.
Definition of Acids, bases and alkalis
Check what you remember
Read the wording for your board, then hide it and explain Acids, bases and alkalis in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Alkalis are soluble metal hydroxides, while bases include insoluble metal hydroxides and metal oxides, and both react with acids to form a salt and water only.
Topics that use Acids, bases and alkalis
- Neutralisation of acids and salt production (AQA GCSE)
Related terms
- Acid anions
- Balanced equations and state symbols
- Gas tests and observations
- Metal and ammonium ions
- Neutralisation reactions
- Patterns in chemical reactions
- Positive ion
- Salt formula
Using Acids, bases and alkalis in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Combined Science questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Combined Science GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge