Chemistry GCSE
Percentage composition
What Percentage composition means in Chemistry GCSE, as defined for AQA.
Definition of Percentage composition
Check what you remember
Read the wording for your board, then hide it and explain Percentage composition in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The percentages of all elements in a compound, which should sum to 100% as a useful check.
Topics that use Percentage composition
- Relative formula mass (AQA GCSE)
Related terms
- Balanced equations and coefficients
- Conservation of mass
- Percentage by mass
- Quantitative reasoning
- Relative formula mass
Using Percentage composition 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.
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