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CONCEPTS & CALCULATIONS

Core Concepts & Calculations

Chemical language, amount of substance, equations, solutions and quantitative reasoning.

Learning units

Open a unit, then choose a topic. The topic page is the permanent home for its lesson, practice and quiz resources.

01Matter and chemical languageClassify matter and describe chemical change with standard notation.＋

Classification of matter and chemical changeMatter and chemical changeComing soonQuiz · soon

Chemical formulae, names and notationFormulae and notationComing soonQuiz · soon

Chemical equations and reaction typesEquations and reaction typesComing soonQuiz · soon

02Amount of substance and stoichiometryConnect particles, moles, mass, gases and reaction ratios.＋

Amount of substance, molar mass and particlesMoles and molar massComing soonQuiz · soon

Stoichiometric calculationsStoichiometric calculationsComing soonQuiz · soon

Gas molar volume and ideal-gas calculationsGas calculationsComing soonQuiz · soon

03SolutionsConcentration, dilution, mass fraction and pH.＋

Molar concentration and dilutionConcentration and dilutionComing soonQuiz · soon

Mass fraction in solutionsMass fractionComing soonQuiz · soon

Acidity, basicity and pHAcidity and pHComing soonQuiz · soon