Key term for OCR GCSE Chemistry B, used in Reaction rate control.
The principle stating that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.
Conservation of mass appears in OCR GCSE Chemistry B revision content for Making useful chemicals, especially Reaction rate control and Identifying catalysts.
Making useful chemicals
Reaction rate control • Identifying catalysts
Chemicals of the natural environment
Electrolysis principles • Half equations
Chemical patterns
Chemical equations • Writing balanced equations
Air and water
Atmospheric changes over time • The particle model
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