filtration and crystallisation

Question 1

filtration

Answer 1

used to separate an insoluble solid(a solid that will not dissolve in a solvent even after mixing) from a liquid
can be used for purification aswell

Question 2

crystallisation

Answer 2

separates a soluble solid(substances that dissolve in a given liquid)
used for purification

Question 3

choosing the right purification method

Answer 3

depends on the properties of the substances in the mixture