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Relative atomic and formula mass

Relative atomic and formula mass

Relative atomic mass, ArA_rAr​, is the average mass of an atom of an element compared with one-twelfth of the mass of a carbon-12 atom. The Periodic Table gives the ArA_rAr​ value for each element.

2.1.2 Relative formula mass and empirical formula Lesson

  1. GCSE
  2. /Chemistry
  3. /2.1.2 Relative formula mass and empirical formula

Step-by-step lessons on OCR GCSE Chemistry 2.1.2 Relative formula mass and empirical formula. 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