A sample of potable water contains impurities - Edexcel - GCSE Chemistry - Question 3 - 2021 - Paper 1
Question 3
A sample of potable water contains impurities.
Why is this sample of water potable even though it contains impurities?
A the impurities have no smell
B the impu... show full transcript
Worked Solution & Example Answer:A sample of potable water contains impurities - Edexcel - GCSE Chemistry - Question 3 - 2021 - Paper 1
Step 1
Why is this sample of water potable even though it contains impurities?
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Answer
The correct answer is A: the impurities have no smell. This characteristic allows the water to remain potable despite the presence of impurities.
Step 2
What is sedimentation?
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Answer
The correct answer is C: the impurities in the waste water settle to the bottom of their container. This process allows for the separation of solid impurities from the water by allowing them to settle due to gravity.
Step 3
State why the waste water is filtered.
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Answer
The waste water is filtered to remove fine particles and any remaining suspended impurities that are not removed during sedimentation, ensuring cleaner water.
Step 4
State the reason for chlorination.
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Answer
Chlorination is performed to disinfect the water by killing harmful microorganisms, making it safe for drinking.
