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ZIMSEC O-Level Chemistry

Atomic structure

Atomic structure in ZIMSEC O-Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic20 practice questions1 lesson

Overview

Form 3 (competency matrix 8.3.1).

Learning objectives

What the syllabus expects you to be able to do.

  1. 7.1.3.1Describe the protons, neutrons and electrons that make up an atom and draw diagrams to show the structure of atoms.

Lessons

  • Atomic structure

    25 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Exam style

Atomic structure: sample question

1 mark

An atom has 14 protons, 15 neutrons and 14 electrons. What is its mass number?

Choose one answer

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