AQA GCSE Chemistry · 8462
Specification 4.3.2.3 · Paper 1
- Revise: Balancing Equations using Moles
The relative amounts in moles of the substances taking part in a reaction.
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GCSE Chemistry · key term
The ratio between the amounts, in moles, of substances in a reaction, obtained from the coefficients in its balanced equation.
Used by AQA, Edexcel and OCR
Specification 4.3.2.3 · Paper 1
The relative amounts in moles of the substances taking part in a reaction.
Specification 1.52, 1.53, 5.10C, 5.17C · Paper 1, Paper 2
The whole-number proportions of substances shown by the coefficients in a balanced chemical equation.
Revise: Limiting ReactantsA balanced chemical equation is a counting statement. Its coefficients show the fixed mole ratio in which reactants are consumed.
A comparison showing the relative amounts in moles of the substances in a reaction.
The numerical ratio between reacting amounts in moles, obtained from the coefficients in a balanced equation.
Specification C3.1k, C5.1e, C5.1g · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The ratio of amounts in moles represented by the coefficients of a balanced chemical equation.
A numerical comparison between the amounts of substances that react or form, obtained from the coefficients in a balanced equation.
The whole-number relationship between amounts in moles, given by the coefficients in a balanced equation.
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The simplest proportional relationship between the amounts, in moles, of substances in a reaction.
The whole-number proportion in which substances react or are produced, obtained from the coefficients in a balanced equation.
The ratio of amounts of reacting substances, in moles, given by the coefficients in a balanced equation.
Simplify the entire mole ratio together. If one term is 2.5, multiply every term by 2 rather than rounding 2.5 to 3.
Write the balanced equation before using a mole ratio; do not assume every acid–alkali reaction is 1:1.
Balance the equation before using its coefficients as a mole ratio; never use the small numbers within chemical formulae as the reacting ratio.
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