ZIMSEC A-Level Chemistry
6.1.1Atoms, Molecules and Stoichiometry
Atoms, Molecules and Stoichiometry in ZIMSEC A-Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Topic117 practice questions5 lessons
Overview
Form 5 (relative masses, mass spectra, the mole, formulae, stoichiometric calculations) and Form 6 (reaction ratios, titration, percentage yield and purity).
In this topic
Lessons
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Relative masses, the mole and the Avogadro constant
35 min
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Interpreting mass spectra
45 min
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Formulae, equations, and empirical and molecular formulae
40 min
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Reacting masses, gas volumes, yield and purity
45 min
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Solution concentrations and acid-base titration calculations
45 min
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Sample question
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