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WorksheetsATS KS3 Chemistry: Chemical Compounds
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
How many atoms of oxygen are there in water? H2O
a)
1
b)
2
c)
0
2.
How many atoms of sulphur are in sulphuric acid? H2SO4
a)
6
b)
2
c)
4
d)
1
3.
How many atoms are there all together in HCl?
a)
1
b)
2
c)
3
4.
What are the different elements in carbon dioxide?
a)
carbon
b)
cobalt and oxygen
c)
oxygen and carbon
d)
oxide and carbon
5.
How many atoms are there all together in Magnesium hydroxide? Mg(OH)2
a)
3
b)
5
c)
2
6.
How many different elements make up nitric acid? HNO3
a)
1
b)
5
c)
3
7.
How many atoms in total are there in nitric acid? HNO3
a)
3
b)
6
c)
5
8.
What elements make up Copper sulphate? CuSO4
a)
copper, sulphate
b)
copper, sulphur
c)
copper, sulphur and oxygen
d)
copper and oxygen
9.
What is the correct chemical formula for water?
a)
H2O
b)
HO2
c)
H2O
d)
H2O
10.
How many atoms of hydrogen are in ethanol? C2H5OH
a)
5
b)
2
c)
6
d)
9
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