Curriculum
Course: Alhussan Chemistry — Stage 8
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Curriculum

Alhussan Chemistry — Stage 8

Chapter 7: Inside Atoms

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Chapter 8: Pure Substances and Solutions

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Chapter 9: Chemical Reactions 2

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Quiz

8.6 Chlorine and water — Visual & Photo Quiz

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  • Questions count: 1
  • Passing grade: B+
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1.
Look at the municipal water treatment facility photo. Why is a tiny, carefully controlled amount of chlorine gas or hypochlorite added to drinking water supplies?
Dr Dabour Hub Academy - figure 1
To kill pathogenic bacteria, viruses, and microorganisms (disinfection)
To give drinking water a sweet taste
To turn river water blue
To make water boil faster in homes
Part of Chapter 8: Pure Substances and Solutions — see every lesson and quiz in this unit.
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