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Edexcel GCSE Chemistry stuff > Water treatment (Paper 1) > Flashcards

Water treatment (Paper 1) Flashcards

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1
Q

What are the 3 limited water resources in the UK?

A

-Surface water
-Ground water
-Waste water

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2
Q

How is water purified?

A

-Filtration
-Sedimentation
-Chlorination

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3
Q

What is filtration?

A

Filtration - a wire mesh screens out large twigs and then gravel and sand beds filter out and other solid bits

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4
Q

What is sedimentation?

A

Sedimentation - Iron sulfate or aluminium sulfate is added to the water which makes particles clump together and settle at the bottom

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5
Q

What is chlorination?

A

Chlorine gas is bubbled through to kill harmful bacteria and other microbes

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Edexcel GCSE Chemistry stuff (16 decks)

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