Filtration and Crystallisation

Question 1

What is filtration used for?

Answer 1

Filtration is used to separate an insoluble solid from a liquid

Question 2

Describe the method of filtration

Answer 2

Pop some filters paper into a funnel and pour the mixture into it. The liquid part of the mixture runs through the paper, leaving behind a solid residue

Question 3

What is crystallisation used for?

Answer 3

Separating a soluble solid from a solution

Question 4

What is the method for crystallisation?

Answer 4

1.) Pour the solution into an evaporating dish and gently heat the solution. Some of the water will evaporate, and the solution will become more concentrated
2.) Once some of the water has evaporated or crystals start to form, remove the dish from the heat and let it cool
3.) The salt should start to form crystals as it becomes insoluble in the cold and highly concentrated solution
4.) Filter the crystals out of the solution and leave them in a warm place to dry