C2 States of Matter and Mixtures

Question 1

What are the properties of solids?

Answer 1

1. Strong forces of attraction hold particles in fixed positions in a regular lattice arrangement
2. They vibrate about their fixed positions

Question 2

What are the properties of liquids?

Answer 2

1. Some force of attraction between the particles
2. Don’t keep a definite shape and fill the bottom of the container
3. Particles are constantly moving in random motion

Question 3

What are the properties of gases?

Answer 3

1. Little force of attraction between the particles
2. Fill their container
3. Particles are constantly moving in random motion

Question 4

What is the mobile phase?

Answer 4

Where the molecules can move - e.g. solvent

Question 5

What is the stationary phase?

Answer 5

Where the molecules cannot move - e.g. chromatography paper

Question 6

What are the processes to treat water in the UK?

Answer 6

1. Filtration - removes large impurities
2. Sedimentation - removes any small impurities
3. Chlorination - kills any harmful bacteria and microbes