Deduce Chemical Formula (IGCSE)
•• Deduce the formula of a simple compound from the relative numbers of atoms present
| Formula |
Atoms present |
| CO2 |
1 carbon, 2 oxygen |
| H2O |
2 hydrogen, 1 oxygen |
| CH4 |
1 carbon, 4 hydrogen |
| NH3 |
1 nitrogen, 3 hydrogen |
| CH3COOH |
4 hydrogen, 2 oxygen, 2 carbon |
| Mg(OH)2 |
1 magnesium, 2 oxygen, 2 hydrogen |
| Al(NO3)3 |
1 aluminium, 3 nitrogen, 9 oxygen |
•• Deduce the formula of a simple compound from a model or a diagrammatic representation
