Key Stage 3
Meaning
A Chemical Formula is a simple way to show the number and type of atoms in a chemical.
About Chemical Formulae
- Chemical Formulae show which elements are in a molecule.
- The number of each element in a molecule is shown with a number written just after and lower than the element.
Examples
| Water | Carbon Dioxide | Methane | Ethanol |
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| H2O | CO2 | CH4 | CH5OH |