Percentage Yield Calculations - AQA GCSE Chemistry Practice Book

Students know the percentage yield formula but consistently lose marks by confusing actual yield with theoretical yield. This AQA GCSE Chemistry workbook builds exam-ready confidence 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 Percentage Yield (percentage yield = actual yield / theoretical yield x 100)

- 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 (Combined Science and Triple Chemistry, higher tier)

Percentage yield questions require students to compare the mass of product actually obtained with the maximum mass predicted by the balanced equation. Students explain why yield is always less than 100% and link this to incomplete reactions, side reactions, and practical losses.

Common student mistakes this workbook addresses: putting theoretical yield on top instead of actual yield, not calculating the theoretical yield from the balanced equation first, giving a yield over 100% without questioning it, and confusing percentage yield with atom economy.

Suitable for AQA GCSE Combined Science and Chemistry (Triple), higher tier.

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