Worksheets8. Chemical formulae (Y7)
Total questions: 8
Worksheet time: 4mins
Name
Class
Date
1.
Which elements are in this compound?
H2O
a)
helium and oxide
b)
hydrogen and oxygen
c)
water
d)
waterium and oxygen
2.
Which elements are in this compound?
CuSO4
a)
cuperium, sodium and oxygen
b)
copper sulfate
c)
copper, sulfur and oxygen
d)
carbon, sodium and oxygen
3.
Which chemical formula contains the following elements:
carbon, hydrogen and oxygen?
a)
CH4
b)
Na2SO4
c)
C2H5OH
d)
CO2
4.
Which chemical formula contains the following elements:
zinc, sulfur and oxygen?
a)
ZnSO4
b)
Na2SO4
c)
ZnO
d)
FeCl3
5.
How many atoms of oxygen does copper sulfate (CuSO4) contain?
a)
1
b)
2
c)
3
d)
4
6.
How many atoms of iron does iron oxide (Fe2O3) contain?
a)
1
b)
2
c)
3
d)
5
7.
How many atoms of sodium does sodium carbonate (Na2CO3) contain?
a)
1
b)
2
c)
3
d)
5
8.
How many atoms of nitrogen does sodium nitrate (NaNO3) contain?
a)
1
b)
2
c)
3
d)
5
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