C3

Question 1

What is a mixture?

Answer 1

2 or more elements that are not chemically combined

Question 2

What is an element?

Answer 2

A pure substance made up of one type of atom only

Question 3

What is an atom?

Answer 3

Smallest part of an element which can be recognised as that element

Question 4

What is filtration?

Answer 4

Separates substances that are insoluble in a particular solvent from solute

Question 5

What is chromatography?

Answer 5

When small amounts of dissolved substances are separated by running a solvent along material

Question 6

What is crystallisation?

Answer 6

Separates a soluble substance from a solvent by evaporation

Question 7

What is simple distillation?

Answer 7

Separates a soluble substance from a solvent by evaporation

Question 8

What is fractional distillation?

Answer 8

Separates liquids from a mixture of liquids by boiling of substances at different temperatures and then condensing and collecting liquids

Question 9

What is a solvent?

Answer 9

The liquid in which a solute dissolves

Question 10

What is a solute?

Answer 10

The substance that dissolves in a liquid to form a solution

Question 11

What is a solution?

Answer 11

The mixture formed when a solute has dissolved in a solvent

Question 12

What does soluble mean?

Answer 12

a substance that would dissolve

Question 13

What does insoluble mean?

Answer 13

Describes a substance that will not dissolve

Question 14

What does miscible mean?

Answer 14

liquids that mix together completely

Question 15

What are immiscible mixtures?

Answer 15

Will form separate layers, e.g., oil + water

Question 16

What is a compound ?

Answer 16

2 or more elements chemically combined