Rain falls over rocks where compounds dissolve into the water
2 of 10
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
3 of 10
What are the advantages of hard water?
Makes the water taste nice, reduce risk of heart disease
4 of 10
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
5 of 10
Name two methods to soften hard water
Ion exchange column,washing soda
6 of 10
Why is chloride added to the water supply?
To kill bacteria
7 of 10
Advantages and disadvantages of adding fluorine to water
Helps dental health : linked to tooth staining, bone disease, pain and unethical
8 of 10
What do water filters contain?
Sliver nano particles-kill bacteria,carbon-absorb impurities,ion exchange resins- make the water soft
9 of 10
Two tests for water impurities
Test boiling point, evaporate it
10 of 10
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
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