Drinking water which comes from rivers needs to be made safe to drink - OCR Gateway - GCSE Chemistry Combined Science - Question 14 - 2020 - Paper 1
Question 14
Drinking water which comes from rivers needs to be made safe to drink.
(a) What is the name of water that is safe to drink?
(b) A student wants to produce water t... show full transcript
Worked Solution & Example Answer:Drinking water which comes from rivers needs to be made safe to drink - OCR Gateway - GCSE Chemistry Combined Science - Question 14 - 2020 - Paper 1
Step 1
What is the name of water that is safe to drink?
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Answer
The name of water that is safe to drink is 'potable water.' This refers to water that is safe for human consumption and does not pose any health risks.
Step 2
Step 1: He leaves the water from the river in a beaker for 24 hours.
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In this step, the mud and heavier particles will settle at the bottom of the beaker, allowing cleaner water to be gathered from the top.
Step 3
Step 2: He filters the top half of the water in the beaker from Step 1.
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During filtration, the water is passed through a filter paper placed in a funnel. This process removes smaller particles and impurities that were suspended in the water, resulting in clearer water.
Step 4
Step 3: He distils the filtered water from Step 2.
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Distillation involves heating the filtered water to create steam and then condensing the steam back into a liquid. This process kills bacteria and removes dissolved impurities, ensuring the water is safe for drinking.
