AQA GCSE Combined Science Trilogy · 8464
Specification 5.3.2.1, 5.3.2.3, 5.6.1.1 · Paper 3, Paper 4
Revise: MolesChemical amounts are measured in moles, using the unit symbol mol. Atoms, molecules and ions are far too small to count individually in a laboratory, so chemists work with large groups of them.
- Revise: Using Moles to Balance Equations
A quantity of substance containing particles, such as atoms or molecules.
- Revise: Reaction Rate Calculation
The unit of amount of substance, written mol. For a substance of known molar mass, the amount in moles is its mass divided by its molar mass.