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3 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Explain how an ion exchange resin changes the dissolved compounds in tap water to improve water? (3 marks) |
-The sodium ions from the resin are exchanged for Ca/Mg -so removed hardness from the water |
-Uses sodium ions |
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One benefit of drinking hard water. (2 marks) |
-the dissolved calcium helps strengthen bones |
-what does calcium help strengthen? |
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How does using temporary hard water decrease the efficiency of a kettle? |
-temporary hard water contains hydrocarbonate ions -which decomposes when heated -and forms a precipitate -which coats the inside of the kettle |
-temporary hard water contains hydrocarbonate ions |
