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Atoms are rearranged, not destroyed

Atoms are rearranged, not destroyed

The law of conservation of mass states that no atoms are made or destroyed in a chemical reaction. Bonds break and new bonds form, but the same atoms are rearranged into new substances.

3.1.3 Conservation of mass and observed changes in mass Lesson

  1. GCSE
  2. /Chemistry
  3. /3.1.3 Conservation of mass and observed changes in mass

Step-by-step lessons on OCR GCSE Chemistry 3.1.3 Conservation of mass and observed changes in mass. 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