R15.18

Resource Description

  • Physical changes – volume, density, temperature & conductivity
  • What are phase changes?
  • Phases of matter & movement of particles in solids, liquids & gases
  • Vibrational, translational & rotational movement
  • Chemical change – where new substances are formed
  • Bonds need to be broken & new chemical bonds formed
  • Decomposition reactions – hydrogen peroxide to water and oxygen
  • Synthesis reaction – formation of water & formation of magnesium oxide
  • Conservation of mass & atoms
  • Law of constant composition.

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