States, Mixtures + Separation - Mixtures

Question 1

What is a mixture

Answer 1

A mixture consists of two or more elements or compounds not chemically combined together. The chemical properties of each substance in the mixture are unchanged.

Question 2

How can you separate mixtures physically

Answer 2

With physical processes such as filtration, crystallisation, simple/fractional distillation and chromatography.

These are physical, thus do not consist of chemical reactions and no new substances are made

Question 3

State examples of each separation technique

Answer 3

Filtration + Crystallisation - separate rock salt
Fractional distillation - making of crude oil
Chromatography - separating different dyes in an ink