15 marks
Many compounds and elements have important uses.
Complete the table to show the name, formula and use of each compound and element.
name of compound or element | number of atoms in the formula | formula | use |
chlorine | chlorine = 2 | Cl2 |
|
| carbon = 1 hydrogen = 4 | CH4 |
|
calcium carbonate | calcium = 1 carbon = 1 oxygen = 3 |
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