Sign up for FREE

Elements, compounds and mixtures (introduction)

Last updated 8 months ago

20 questions

4

1

1

1

1

3

2

3

1

1

1

1

1

1

1

1

1

1

8

1

Question 1

1.

This exercise includes extra detail that you do not need to know until GCSE, (focus on the using the classification system).

Elements have one type of atom only
Elements can be found on the periodic table
Elements have one capital letter in their formula only

Compounds have more than one type of element chemically joined together in a fixed ratio.
Compounds have a formula with more than one capital letter.
Compounds can not be found on the periodic table.

Mixtures have more than one type of particle, jumbled together.
The particles do not have to be in a fixed ratio.
e.g.1. inhaled and exhaled air have different percentages of gases.
e g.2. Tea can be weak or strong, contain milk or not and contain sugar or not.

Select the compounds

Question 2

2.

Select the elements

Question 3

3.

Select the compounds

Question 4

4.

Select the mixtures

Question 5

5.

Select the elements

Question 6

6.

Select the mixtures

Question 7

7.

Identify the elements

Question 8

8.

Identify the compounds

Question 9

9.

Identify the elements

Question 10

10.

Select the element

Question 11

11.

Select the compound

Question 12

12.

Select the mixtures

Question 13

13.

Select the mixture

Question 14

14.

Select the elements

Question 15

15.

Select the compound

Question 16

16.

Select the element(s)

Question 17

17.

Select the compound(s)

Question 18

18.

Select the mixture

Question 19

19.

	Element	Compound	mixture
Na
Br2
NaBr
MgCl2
Air
Tea
soil
Al2O3
CO2
O2
H2O

Question 20

20.

Select the elements.