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HomeAQA GCSE ChemistryQuantitative chemistry: the mole and molar mass
AQA · GCSE · Chemistry

Quantitative chemistry: the mole and molar mass
Practice Questions

40 AQA GCSE Chemistry questions on Quantitative chemistry: the mole and molar mass, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Quantitative chemistry: the mole and molar mass.

Try 2 sample questions on Quantitative chemistry: the mole and molar mass

Question 1 · 1 mark · Difficulty 1/3

What are the units of molar mass?

  1. g/dm³
  2. mol/g
  3. g/mol
  4. mol/dm³
Show answer & explanation
✓ Answer: Cg/mol
Award 1 mark. Molar mass is the mass of one mole of a substance, so it is grams per mole. Both g/dm³ and mol/dm³ are concentration units, and mol/g simply inverts the correct quantity.
Question 2 · 1 mark · Difficulty 1/3

What is the molar mass of oxygen gas, O₂? (Ar of O = 16)

  1. 48 g/mol
  2. 16 g/mol
  3. 32 g/mol
  4. 8 g/mol
Show answer & explanation
✓ Answer: C32 g/mol
Award 1 mark. Oxygen gas is diatomic, so two oxygen atoms of 16 each give 32. Quoting 16 is the common slip of using the atomic mass instead of the formula mass.
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AQA GCSE Chemistry: Quantitative chemistry: the mole and molar mass FAQ

Is Kramizo free for AQA GCSE students preparing for Chemistry?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Quantitative chemistry: the mole and molar mass practice with other Chemistry topics or even switch to a totally different AQA subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Quantitative chemistry: the mole and molar mass questions aligned to the official AQA GCSE Chemistry syllabus?
Every question is written against the published AQA GCSE Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real AQA paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from AQA.
How is Quantitative chemistry: the mole and molar mass typically tested on AQA GCSE Chemistry papers?
Quantitative chemistry: the mole and molar mass appears across multiple question types on real AQA GCSE Chemistry papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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