ZIMSEC O-Level Chemistry
7.4.0Environmental chemistry
Environmental chemistry in ZIMSEC O-Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Syllabus section183 practice questions9 lessons
In this topic
Lessons
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Types and sources of waste
30 min
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Herbs in health and agriculture
30 min
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Hard and soft water
30 min
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Water: tests, sources and pollutants
30 min
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Air pollution: sources, effects and control
40 min
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Greenhouse gases and climate change
35 min
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The ozone layer
20 min
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Treatment of the water supply
25 min
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Waste disposal, reuse and recycling
35 min
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Sample question
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