Potable Water

Question 1

What are the steps to treat water from reservoirs?

Answer 1

Filter to remove insoluble particles and leaves

Sterilise with chlorine, ozone, uv light to kill microbes

Question 2

Why is it difficult to produce drinking water from waste water than water in lakes?

Answer 2

Water needs more processes to remove organic matter

Question 3

Why is distillation not an economic method.?

Answer 3

Expensive

Question 4

How could water be tested to show it’s pure?

Answer 4

Find boiling point

If impure, water will boil above 100 degrees

Question 5

How could a student check that all water had evaporated?

Answer 5

Re heat and weigh again

Question 6

What is potable water?

Answer 6

Water that is safe to drink

Question 7

How do we remove sea water?

Answer 7

Desalination or reverse osmosis

Question 8

How does the process of desalination work?

Answer 8

Heat

Vapour produced and rises

Evaporates

Cools down

Condenses

Question 9

What does the condenser do?

Answer 9

Allows cold water to flow so the vapour can condense and cool down