Learning objective

Define isotopes as atoms of the same element with different numbers of neutrons.

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Topic

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

Subtopic

Size and mass of atoms

AQA GCSE ChemistryAtomic structure and the periodic table

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Short explanation

Define isotopes as atoms of the same element with different numbers of neutrons. This objective belongs to Size and mass of atoms within A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes for AQA GCSE Chemistry 8462. A strong answer should use isotope accurately, explain the chemistry behind the statement, and connect the idea back to the exact command in the objective. When revising, separate this point from neighbouring Chemistry ideas by naming the relevant particle, substance, process, calculation, observation, or structure before giving the final conclusion.

Key concepts

isotopemass number

Why it matters

This objective helps connect Size and mass of atoms to exam-style questions, flashcards, and revision notes for A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes.

Common mistakes

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