Chemistry GCSE
Percentage by mass
What Percentage by mass means in Chemistry GCSE, as defined for AQA.
Definition of Percentage by mass
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Reference: AQA
The contribution of one element to the total mass of a compound, found by dividing the element's total mass by Mᵣ and multiplying by 100.
Topics that use Percentage by mass
- Relative formula mass (AQA GCSE)
Related terms
- Balanced equations and coefficients
- Conservation of mass
- Quantitative reasoning
- Relative formula mass
- Percentage composition
Using Percentage by mass in the exam
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