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  • Chemistry
    • Metals and Acids
      • MASH- Metal + Acid = Salt + Hydrogen
      • Mg, Al, Zn, Fe, Sn, Pb and Cu
      • Most reactive fizz with bubbles and pops
      • Sulphuric- Sulphates, Hydrochloric-Chlorides, Nitric- Nitrates
    • Tests for Substances
      • The lit splint will make a squeaky pop in the presence of hydrogen
      • Carbon dioxide turns limewater cloudy.
      • Oxygen relights a glowing splint
    • Metals and Oxygen
      • Metal + Oxygen = Metal Oxide
      • Surface area and Volume refer to State of Division
      • Low state of division is high reaction
    • Metals and Water
      • Reactions
        • Sulphur: Bright blue flame/Forms strong acid
        • Carbon:  Glows red and sparks/Formsweak acid
        • Magnesium: Bright white flame/Forms strong alkali
        • Iron: Yellow spark/Forms neutral solution
      • Metal + water = Metal Hydroxide + Hydrogen
      • Alkali metals are group one of the Periodic Table and are v reactive
      • Most reactive is K and floats on surface, before catching lilac flame
      • PSCMACZITLHCSGP- Please save Charlie's monkeys and Charlie's zebras in the lead high cage surrounding Gareths pelicans
    • Rusting
      • Air/Water/Oxygen/Salt against Oil/Boiled Water
      • Metals corrode when in contact with air or water. Iron rusts. Metals corrode.
      • Rust is hydrated iron oxide: Fe2O3.nh2O,and we need oxygen, water and iron
      • Physical/ Sacrificial/ Galvanising
    • Reactivity Series
      • Lists Metals from least to most reactive
      • Oxidation and Reduction: Adding or removing oxygen from a compound
    • Displacement Reactions
      • The more reactive a metal, the greater its affinity for oxygen
      • A more reactive metal will displace a less reactive metal from its compound
      • Mg is reactive and MgSO4 is not


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