Chemical calculations written questions
Practise G3 Science Chemistry quantitative questions and balanced-equation reasoning, then review your working with marking guidance.
Learning goals
- State the symbols of the elements and the formulae of the compounds in the syllabus
- Deduce a compound's formula from the relative numbers of its atoms, and the reverse
- Deduce the formula of an ionic compound from the charges on its ions, and the reverse
- Interpret chemical equations that include state symbols
- Construct chemical and ionic equations with state symbols
- Define relative atomic mass, Aᵣ
- Define relative molecular mass, Mᵣ, and calculate Mᵣ and relative formula mass by adding relative atomic masses
- Define the mole using the Avogadro constant
- Calculate reacting masses and gas volumes, including with a limiting reactant, taking one mole of gas as 24 dm³ at room temperature and pressure
- Use concentrations in mol/dm³ or g/dm³ to process titration results and solve simple problems
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Paper instructions
Practise
Practise questions on the skills you are learning. This is for practice only and doesn’t count towards your course progress.
- Question count is checked before you start.
- About 10 minutes.
- Feedback appears after you check each answer.
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Beyond the syllabus: optional enrichment that does not count towards your progress.