Unit 1
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1.1 Learning about science

1.2 Practice of science

1.3 Laboratory safety

1.4 Laboratory apparatus

1.5 Using measuring instruments

1.6 Basic practical skills

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Unit 2
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2.1 The water cycle

2.2 Dissolving

2.3 Water purification

2.4 Further treatment of drinking water

2.5 The water treatment process in Hong Kong

2.6 Water conservation and pollution

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Unit 3
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3.1 Living things

3.2 Grouping of living things

3.3 Living things and habitats

3.4 Biodiversity

3.5 Reduction in biodiversity

3.6 Conservation

Unit end