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Atoms, nuclei and isotopes

Atoms, nuclei and isotopes

Atoms have a tiny, positively charged nucleus containing protons and neutrons. Electrons occupy energy levels around the nucleus, and atomic models matter because they explain observations such as spectra and radioactivity.

Basic ideas about atoms Lesson

  1. A Level
  2. /Chemistry
  3. /Basic ideas about atoms

Step-by-step lessons on Eduqas A Level Chemistry Basic ideas about atoms. Each one builds up to exam-style questions. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.

Lessons