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ZIMSEC O-Level Chemistry

Periodic trends

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

Form 3 (competency matrix 8.11.2).

Learning objectives

What the syllabus expects you to be able to do.

  1. 7.2.1.1Describe the change from metallic to non-metallic character across a period.
  2. 7.2.1.2Explain the relationship between the number of electron shells and the period.

Lessons

  • The Periodic Table and periodic trends

    30 min

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Sample question

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

Exam style

Periodic trends: sample question

1 mark

An element has the electronic configuration 2,8,6. Where is it in the Periodic Table?

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