Chemistry GCSE
Atomic Number
What Atomic Number means in Chemistry GCSE, as defined for OCR.
Definition of Atomic Number
The number of protons in the nucleus of an atom. It determines the element.
Topics that use Atomic Number
- Topic C1: Particles (OCR GCSE)
Related terms
Using Atomic Number 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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