← 1.3 Water hardness

The physical properties of water

Integrated Science · Grade 9 · about 40 minutes

Colour, odour and boiling point can all be checked without tasting anything.

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  • 8 sections of explanation, worked examples and diagrams
  • 1 practice task with hints and worked answers
  • A quiz that marks itself as you go
  • Your progress kept across every subject you take
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