Water Purification- C

Question 1

What is the method?

Answer 1

-Pour the sample water into a beaker and note its appearance
-Test a small amount for pH using indicator or probe
-Set up simple distillation
-Heat to boil and collect the condensed (distilled) water
-Test the distilled water’s pH and appearance

Question 2

Independent variable?

Answer 2

Source of water sample

Question 3

Dependent variable?

Answer 3

Quality and pH of water after purification

Question 4

Control variable?

Answer 4

Volume of water used for each test

Question 5

Possible errors?

Answer 5

Some impurities may remain if the apparatus is not cleaned properly

Question 6

One way to reduce error.

Answer 6

Rinse equipment before use and ensure tight seals in the distillation setup

Question 7

A key note for the practical.

Answer 7

Distillation removes dissolved solids but not all contaminants

Question 8

What should you record in the water purification practical?

Answer 8

The pH and appearance of both the sample water and the distilled water