Edexcel International GCSE Chemistry

Edexcel International GCSE Chemistry Atomic Structure Exam Questions

Free Edexcel International GCSE Chemistry exam questions on Atomic Structure, with mark schemes. Covers protons, neutrons, electrons, isotopes and relative atomic mass.

Atomic Structure exam questions

These packs of real past exam questions cover the whole of Section 1: Principles of Chemistry, including Atomic Structure. Work through every question on this sub-topic, then mark your answers against the mark scheme.

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About Edexcel International GCSE Chemistry Atomic Structure

This sub-topic covers the structure of atoms.

What you need to know

  • Subatomic particles Charges, masses and locations.
  • Isotopes Same protons, different neutrons.
  • Relative atomic mass Calculating from isotope abundances.

Common mistakes in Atomic Structure

  • Mixing atomic and mass numbers.
  • Forgetting to divide by 100.

Try two Atomic Structure exam-style questions

1. State the number of neutrons in ²³Na. (1 mark)

Show the mark scheme answer

12.

2. Define isotopes. (1 mark)

Show the mark scheme answer

Atoms of the same element with different numbers of neutrons.

Atomic Structure FAQs

What does Atomic Structure cover?

Subatomic particles, isotopes and Ar.

Are electron configurations needed?

Yes, for the first 20 elements.