BRAINCAKEBalancing Equations
The law of conservation of mass states that atoms cannot be created or destroyed.
Chemical reactions rearrange the atoms by breaking existing bonds and forming new ones. In writing a chemical equation it is necessary to ensure the same number of atoms of each element are on both sides.
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Key terms in this lesson
- Mole
- The amount of substance that contains as many particles as there are atoms in exactly 12g of carbon-12.
More in Amount of Substance
- Molecular Formula
- Combustion Analysis
- Example Question - 1
- Example Question - 2
- Ionic Equations
- Titrations
- Titration Calculations
- Example Question - 1
All 33 lessons in Amount of Substance · All AQA AS-level Chemistry topics