Molar Gas Volume - AQA GCSE Chemistry Practice Book

The 24 dm3 rule is easy to remember but students struggle to apply it in multi-step gas calculations. This AQA GCSE Triple Chemistry workbook builds fluency with 12 scaffolded questions using the EVERY method framework.

The EVERY method breaks each calculation into clear steps: Equation, Values, Enter values into the equation, Rearrange if needed, Your units. Every question has a structured EVERY table for students to complete, building a consistent problem-solving habit. Questions get progressively harder: Q1-3 are straightforward, Q4-6 introduce unit conversions, and Q7-12 require rearranging the formula.

What's inside:

- 12 progressive questions on Molar Gas Volume (volume = moles x 24 dm3 at RTP)

- Structured EVERY method table on every question page

- Progressive difficulty: simple substitution, then unit conversions, then rearranging

- Self-assessment tracker with "What made me stuck?" reflection checklist

- Full worked answers for all 12 questions using the EVERY method steps

AQA specification reference: 5.3 Quantitative Chemistry (Triple Chemistry only, higher tier)

Molar gas volume calculations use the fact that one mole of any gas occupies 24 dm3 at room temperature and pressure. Students calculate the volume of gas produced in a reaction, or work backwards from volume to moles, often as part of a multi-step reacting mass calculation.

Common student mistakes this workbook addresses: using 24000 cm3 when the question gives volume in dm3 (or vice versa), forgetting that the 24 dm3 rule only applies at RTP, not calculating moles of gas from the balanced equation first, and confusing molar gas volume with molar mass.

Suitable for AQA GCSE Chemistry (Triple only, higher tier).

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