Yr 10 - Water Safe to Drink

By which process did the oceans form from water vapour?

• Evaporation

• Freezing

• Condensation

• Transportation

Only pure water is safe to drink

• True

• False

Potable water contains dissolved mineral ions.

• True

• False

What is the pH of pure water?

• 3

• 7

• 9

• 12

The first step in making water safe to drink is sterilisation.

• True

• False

Which of the following cannot be used to sterilise water?

• UV light

• Chlorine

• Ozone

• Bromine

sea water contains high level of...

• Sodium bromide

• Magnesium chlorine

• Magnesium bromide

• Sodium chloride

Desalination is when salt is removed from seawater.

• True

• False

Distillation and reverse diffusion are two methods of desalination

• True

• False

Distillation use more energy than reverse osmosis

• True

• False