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Chemical symbols and formulae

Chemical symbols and formulae

A chemical symbol is a one- or two-letter code for an element. The first letter is always capitalised and the second letter, if present, is always lower case, so calcium is Ca\text{Ca}Ca and chlorine is Cl\text{Cl}Cl.

3.1.1 Writing formulae and balanced chemical equations Lesson

  1. GCSE
  2. /Chemistry
  3. /3.1.1 Writing formulae and balanced chemical equations

Step-by-step lessons on OCR GCSE Chemistry 3.1.1 Writing formulae and balanced chemical 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.

Lessons