Chapter 1 - Mixtures

Question 1

Evaportation

Answer 1

Salt disappears in water. It can be separated by boiling the solution. Eventually the water will be evaporated and you will be left with salt.

Question 2

Crystallisation

Answer 2

A liquid changing into its solid form. The solution is warmed in an open container to allow it to evaporate. As the solution is cooling, the solid will come out of the solution and crystals will start to grow.

Question 3

Chromatography

Answer 3

A method used to dissolve substances from one another. It is often used when the substances have colour like ink. 2 substances will be the same if they produce the same colour spot and that travels the same distance up the paper

Question 4

Fractional distillation

Answer 4

Method used to separate a liquid from a mixture with 2 or more liquids. It works as each liquid will have a different boiling point, so when it is heated one liquid will evaporate before the other

Question 5

Filtration

Answer 5

Used to separated a mixture of water and insoluble substance. They are poured into a funnel and the water will drop down into a beaker leaving the insoluble substance by itself.