Distillation and evaporation

Question 1

How do people obtain salt from seawater ?

Answer 1

Evaporation separates salt from seawater. The sun transfers energy to the water molecules and they leave the surface of the solution. When all the water has evaporated, solid salt remains.

Question 2

State 3 uses of evaporation

Answer 2

To make copper sulfate crystals. To make glues dry. To evaporate the water so lithium compounds can be found under a desert in Bolivia.

Question 3

What is distillation ?

Answer 3

Distillation is a processs that uses evaporation and condensation to obtain a solvent from a solution.

Question 4

How does distillation work ?

Answer 4

Water in the salt solution boils.
Steam leaves the solution.
Steam travels through the condenser and cools down. 
Steam condenses to form liquid water.
Liquid water drips into the beaker.

Question 5

What is another use of distillation ?

Answer 5

You can use it to separate water from inky water.

Question 6

How does Saudi Arabia get water with little rain and no permanent rivers ?

Answer 6

They use distillation to obtain water from seawater.