Water

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  • Created by: chloefaun
  • Created on: 17-04-14 16:33
What ions make water hard?
Mg-magnesium and Ca-calcium
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How do we get hard water?
Rain falls over rocks where compounds dissolve into the water
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What are the disadvantages of hard water?
The don't easily make a lather-more expensive to buy soap, create scum on the water, create a build up of scale
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What are the advantages of hard water?
Makes the water taste nice, reduce risk of heart disease
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Explain temporary hard water
It contains calcium hydrogecarbonate ions, when heated these break down to form carbonates and react with the Mg and Ca ions to form insoluble products
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Name two methods to soften hard water
Ion exchange column,washing soda
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Why is chloride added to the water supply?
To kill bacteria
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Advantages and disadvantages of adding fluorine to water
Helps dental health : linked to tooth staining, bone disease, pain and unethical
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What do water filters contain?
Sliver nano particles-kill bacteria,carbon-absorb impurities,ion exchange resins- make the water soft
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Two tests for water impurities
Test boiling point, evaporate it
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Other cards in this set

Card 2

Front

How do we get hard water?

Back

Rain falls over rocks where compounds dissolve into the water

Card 3

Front

What are the disadvantages of hard water?

Back

Preview of the front of card 3

Card 4

Front

What are the advantages of hard water?

Back

Preview of the front of card 4

Card 5

Front

Explain temporary hard water

Back

Preview of the front of card 5
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