Quantitative chemistry

    AQA
    GCSE

    Quantitative chemistry focuses on the numerical analysis of chemical reactions, grounded in the fundamental Law of Conservation of Mass. It introduces the mole as the standard unit for measuring the amount of substance, enabling the conversion between mass, volume, and particle count to predict reaction outcomes. Mastery of this topic allows for the calculation of reacting masses, solution concentrations, and gas volumes, while also providing the tools to evaluate industrial efficiency through percentage yield and atom economy.

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    Objectives
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    Exam Tips
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    Pitfalls
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    Key Terms
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    Mark Points

    Learning Objectives

    What you need to know and understand

    • Conservation of mass and balanced chemical equations
    • Relative formula mass
    • Mass changes when a reactant or product is a gas
    • Chemical measurements
    • Amounts of substances in equations
    • Using moles to balance equations
    • Limiting reactants
    • Concentration of solutions
    • Percentage yield
    • Atom economy
    • Concentration calculations
    • Gas volume calculations

    Key Terminology

    Essential terms to know

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