4.3.1.1, 4.3.1.3 · Conservation of Mass
State the law of conservation of mass.
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No atoms are lost or made during a chemical reaction, so the total mass of the products equals the total mass of the reactants.
AQA GCSE Chemistry · Topic 3
Quantitative Chemistry flashcards
44 cards on Quantitative Chemistry, every one written against a numbered point in section 4.3 of the AQA Chemistry spec. Here’s what the topic covers, and 4 cards to try.
- 44Flashcards
- 8Sub-topics
- 23Higher only
- 14Triple only
Try 4 cards from Quantitative Chemistry.
Answer each one in your head, then check. In the app, how well you knew it decides when you see it again.
4.3.1.2 · Relative Formula Mass
What is relative formula mass (Mr)?
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The sum of the relative atomic masses (Ar) of all the atoms in the formula.
4.3.2.1–4.3.2.2 · Moles
What is a mole?Higher
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The unit for amount of substance (mol). One mole of any substance contains the same number of particles: 6.02 × 10²³ (the Avogadro constant).
4.3.2.3–4.3.2.4 · Balancing with Moles & Limiting Reactants
How do you balance an equation from reacting masses?Higher
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- Convert each mass to moles (mass ÷ Mr)
- Divide by the smallest number of moles
- Use the whole-number ratio as the balancing numbers
- +40more Quantitative Chemistry cards in the app, shown to you just before you’d forget them.Join the waitlist →
What’s in Quantitative Chemistry?
Every part of section 4.3 of the AQA spec, and how many cards cover it. Higher-only cards are hidden for Foundation students. Cards only on the separate Chemistry GCSE are hidden for Combined Science.
- 4.3.1.1, 4.3.1.3Conservation of Mass5 cards
- 4.3.1.2Relative Formula Mass6 cards
- 4.3.1.4Uncertainty in Measurements2 cards
- 4.3.2.1–4.3.2.2Moles9 cards
- 4.3.2.3–4.3.2.4Balancing with Moles & Limiting Reactants4 cards
- 4.3.2.5, 4.3.4Concentration of Solutions6 cards
- 4.3.3Yield & Atom EconomyTriple only7 cards
- 4.3.4–4.3.5Titration Calculations & Gas VolumesTriple only5 cards
Launching November 2026
The other 40 cards are in the app.
revolve. shows you each Quantitative Chemistry card just before you’d forget it, so ten minutes a day is enough. It opens to students soon: join the waitlist and we’ll email you once, when it does.