States Of Matter /

Question 1

Solids

Answer 1

Fixed positions in a regular lattice arrangement. Vibrate about their fixed positions.

Question 2

Liquids

Answer 2

Free to move past each other, but they do tend to stick together. The particles are constantly moving with random motion.

Question 3

Gases

Answer 3

Free to move. The particles move constantly with random motion.

Question 4

Solid to liquid

Liquid to solid

Answer 4

1. Melting

2. Freezing

Question 5

Solid to gas

Answer 5

Subliming

Question 6

Liquid to gas

Gas to liquid

Answer 6

1. Evaporating

2. Condensing

Question 7

Simple distillation

Answer 7

Used for separating out a liquid from a solution. E.g. pure water from seawater

Question 8

Fractional distillation

Answer 8

Used to separate a mixture of liquids. E.g. fractional distillation of crude oil

Question 9

Filtration

Answer 9

Used to sperate an insoluble solid from a liquid.

Pour your mixture in to a funnel with filter paper. The liquid part of the mixture runs through the paper, leaving behind a solid residue.

Question 10

Crystallisation

Answer 10

Sperates a soluble solid from a solution

Question 11

Chromatography

Answer 11

A method used to separate a mixture of soluble substances and identify them

Question 12

Two phases of chromatography

Answer 12

• Mobile phase - where the molecules can move. This is always a liquid or a gas.
• Stationary phase - where the molecules can’t move. This can be sordid or a really thick liquid.

Question 13

What is the stationary phase?

Answer 13

Piece of filter paper

Question 14

What is the mobile phase?

Answer 14

A solvent

Question 15

Water treatment

Answer 15

There are a number of sources of water which can be purified to provide us with potable water.