Chemical Formulae
Match the formula with the diagram
O
H 2O
O
S
Cl
SO2
H
CO
H
HCl
H
O
O
H
H
O
C
H 2O 2
O
Draw these molecules
C=
Cl =
H=
N=
Na =
O=
Cl2
NaCl
NO2
O3
Na2O
NH3
Na3N
C2H5OH
NaHCO3
Naming chemicals – complete the table
Prefix
Meaning
Mono-
2
Tri-
Examples
Monobrow
Monorail
Monocle
Dioxide
Divorce
Diploid
3
Name these chemicals – use the table to help you
CO2
Carbon _
di oxide
SO3
Sulphur
CO
Carbon _
oxide
NO
_______
CO3
Carbon _
oxide
NO2 ________________________
SO2
Sulphur
K2O _________________________
You write the rules
Write three rules to explain what you have learnt about chemical formulae this lesson.
1.
2.
3.