Chemistry GCSE
Law of Conservation of Mass
What Law of Conservation of Mass means in Chemistry GCSE, as defined for OCR.
Definition of Law of Conservation of Mass
The principle that no atoms are lost or made during a chemical reaction, so the mass of the products equals the mass of the reactants.
Topics that use Law of Conservation of Mass
- Topic C3: Chemical reactions (OCR GCSE)
Related terms
Using Law of Conservation of Mass in the exam
Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.
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