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The
Language of Chemistry
Making Molecules
Now we can have some fun making molecules.
The table below gives you a few examples:
Remember the Rule : All of the bonding arms must be used!
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|
Name of
molecule |
Atoms
required |
Molecule |
Notes |
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sodium chloride |
|
 |
Both sodium
and chlorine have one bonding arm. One chlorine atom is
needed to bond with one sodium atom. |
|
calcium oxide |
|
 |
Both calcium and oxygen have
two bonding arms. One calcium atom is needed to bond with
one oxygen atom. |
|
hydrogen sulphide |
|
 |
The hydrogen
atom has one bonding arm. A sulphur atom has two. Two
atoms of hydrogen are needed to join with the sulphur atom. |
|
iron II chloride |
|
 |
The name tells
us that iron has two bonding arms in this compound.
Chlorine has one. Two chlorine atoms are needed to bond
with one iron atom. |
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Test Yourself
(Opens a new window) |
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Homework
(Opens a new window) |
You may have noticed
that metals never make chemical bonds with other metals.
Non-metals, however, can make chemical bonds with either metals
or other non-metals.
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