DRINKING WATER

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  • Created by: sara.5
  • Created on: 14-04-18 13:43
What is meant by Desalination?
A process that produce fresh drinking water by separating the water from salt in salty water
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Why is Desalination not suitable for large producing drinking water on a large scale?
Because desalination requires a lot of energy due to the relatively high melting point of water
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What is chemical analysis?
Chemical analysis involves using chemical reactions or sensitive machines to identify and measure the amount of substance in a sample.
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Why should the water in chemical analysis not contain any salts?
Because incorrect results will be obained
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Why does tap water form unexpected cloudy precipitate?
Because it contains small amount of dissolved salt
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Where does the raw material for producing water come from?
Aquifiers and lakes
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Where are the water in these sources use for?
Resivoirs
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What happens in screening?
Sift out large materials eg twigs and leaves
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What happens in sesimentation?
Small insoluble particles are let to settle out
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What happens in Filtration?
Sand and Gravel act as a filter to remove smaller insoluble particles
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What happens in Chlorination?
A chemical is added to kill micro organisms
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Why is water often analysed?
To test how safe it is and measure its mineral content
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Other cards in this set

Card 2

Front

Why is Desalination not suitable for large producing drinking water on a large scale?

Back

Because desalination requires a lot of energy due to the relatively high melting point of water

Card 3

Front

What is chemical analysis?

Back

Preview of the front of card 3

Card 4

Front

Why should the water in chemical analysis not contain any salts?

Back

Preview of the front of card 4

Card 5

Front

Why does tap water form unexpected cloudy precipitate?

Back

Preview of the front of card 5
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