Hardness of Water

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  • Created by: Han2812
  • Created on: 06-04-13 12:23

Hardness of water

What makes water hard?

  • Dissolved magnesium and calcium compounds make water hard. These normally come from limestone and chalk rock

 

  • Gypsum rocks (mainly calcuim sulfate) also makes water hard. When a river flows over gypsum rock, calcium sulfate dissolves in the water

There are two types of hard water:

  • Water that has flowed over

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