Quantitative Chemistry

Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations

Use conservation of mass, balanced equations, relative formula mass, gas-related mass changes and measurement uncertainty to interpret chemical quantities.

Use of amount of substance in relation to masses of pure substances

Use moles, Avogadro constant, balanced equations, limiting reactants and concentrations to calculate quantities of substances.

Yield and atom economy of chemical reactions (chemistry only)

Calculate percentage yield and atom economy, then evaluate reaction pathways using yield, atom economy and other data.

Using concentrations of solutions in mol/dm3 (chemistry only) (HT only)

Calculate concentration in mol/dm3 and use titration volumes to determine unknown concentrations.

Use of amount of substance in relation to volumes of gases (chemistry only) (HT only)

Use molar gas volume at room temperature and pressure to calculate gas volumes, masses and balanced-equation relationships.