ZIMSEC O-Level Combined Science
7.2.2.4The mole
The mole in ZIMSEC O-Level Combined Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic62 practice questions3 lessons
Overview
Form 3.
Learning objectives
What the syllabus expects you to be able to do.
- 7.2.2.4.1Define the Avogadro number and relate the mole to relative atomic and molecular masses.
- 7.2.2.4.2Calculate relative molecular masses, empirical formulae and concentrations of solutions.
Lessons
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Percentage composition, empirical and molecular formulae
35 min
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Relative atomic, molecular and formula masses
30 min
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The mole and the Avogadro constant
35 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn The mole into a strength.
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