Physics GCSE

identity, charge and mass

What identity, charge and mass means in Physics GCSE, as defined for AQA.

Definition of identity, charge and mass

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Reference: AQA

A change in the lower number means a different element, a change in the upper number alone means a different isotope, and a charge means an ion.

AQA · Mass number, atomic number and isotopes (study guide)

Topics that use identity, charge and mass

Mass number, atomic number and isotopes (AQA GCSE)

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Using identity, charge and mass in the exam

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