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Atomic Structure and Periodic Trends · Autumn Term

Isotopes and Relative Atomic Mass

Students will define isotopes and calculate the relative atomic mass of elements.

Key Questions

  1. Explain why isotopes of the same element have identical chemical properties but different physical properties.
  2. Calculate the relative atomic mass of an element given the abundance of its isotopes.
  3. Analyze how mass spectrometry provides evidence for the existence of isotopes.

National Curriculum Attainment Targets

KS3: Science - Atoms, Elements and Compounds
Year: Year 9
Subject: Science
Unit: Atomic Structure and Periodic Trends
Period: Autumn Term

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