Chapter 20 - Elements, Compounds and Mixtures

Question 1

What is a molecule and give an example

Answer 1

Composed of two or more atoms chemically combined e.g Water - H20

Question 2

What are compounds and give an example

Answer 2

Consist of two or more elements chemically combined e.g. Iron sulfide - FeS

Question 3

What is a mixture and give an example

Answer 3

Made up of two or more substances mingled together but not chemically combined e.g. Tea and sugar

Question 4

An element

Answer 4

A substance made up of only one type of atom e.g. Gold

Question 5

H

Answer 5

Hydrogen

Question 6

C

Answer 6

Carbon

Question 7

N

Answer 7

nitrogen

Question 8

O

Answer 8

Oxygen

Question 9

S

Answer 9

Sulphur

Question 10

Al

Answer 10

Aluminium

Question 11

Fe

Answer 11

Iron

Question 12

Zn

Answer 12

Zinc

Question 13

Ag

Answer 13

Silver

Question 14

Au

Answer 14

Gold

Question 15

Na

Answer 15

Sodium

Question 16

Cu

Answer 16

Copper