1.5 Separation

• Filtration


  Separates insoluble solids from liquids, separates by solubility
• Decanting


  Separates a liquid from a liquid of a different density
• Evaporation


  Separates a dissolved solid from a solution
• Crystallisation


  Separates a dissolved solid from solution
• Types of chemical reaction


  • Decomposition
  • Addition reaction
  • Exothermic
  • Combustion
  • Displacement
  • Endothermic
  • Fermentation
• Decomposition


  1. Breaks down into more than one product

  2. H2O2 → O2 + H2O
• Addition reaction


  1. Two or more reactants create one product

  2. Na + Cl2 → NaCl
• Exothermic


  Releases heat energy
• Exothermic


  • Burning candle
• Combustion


  Exothermic reaction between a fuel and oxygen
• Combustion


  • Fireworks
• Displacement


  1. Reactive element takes the place of a less reactive element

  2. Mg + CuSO4
• Endothermic


  Takes in heat energy
• Endothermic


  • Photosynthesis
• Fermentation


  Biological reaction where fuels are turned into organic molecules