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1.1.5 Size and mass of atoms
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The scale of an atom

The scale of an atom

Scale comparison of an atom and its nucleus, showing an atom radius of approximately 1 \times 10^{-10} m and a nucleus radius of approximately 1 \times 10^{-14} m

An atom has a radius of about 0.10.10.1 nm, which is 1×10−10 m1 \times 10^{-10} \, \text{m}1×10−10m. The nucleus is at the centre of the atom and has a radius of about 1×10−14 m1 \times 10^{-14} \, \text{m}1×10−14m.

1.1.5 Size and mass of atoms Lesson

  1. GCSE
  2. /Chemistry
  3. /1.1.5 Size and mass of atoms

Step-by-step lessons on AQA GCSE Chemistry 1.1.5 Size and mass of atoms. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons