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1.1.1 Formulae, word and balanced equations
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Reading chemical formulae

Reading chemical formulae

Chemical formulae showing subscripts, coefficients, brackets and ion charges

A chemical formula shows which elements are present and the ratio of their atoms. A symbol with no subscript means one atom, while a subscript shows how many atoms of the element immediately before it are present.

1.1.1 Formulae, word and balanced equations Lesson

  1. GCSE
  2. /Chemistry
  3. /1.1.1 Formulae, word and balanced equations

Step-by-step lessons on Edexcel GCSE Chemistry 1.1.1 Formulae, word and balanced equations. 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.

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