Ks3 Chemistry Revision

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Created by: icanteven
Created on: 11-05-14 11:37

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Particles
- States
  - Soilds
    - close together
    - regular pattern
    - held together by bonds
    - vibrate in fixed position
    - cannot move from place to place
  - Liquids
    - random arrangement
    - close together
    - they can move around eachother
  - Gas
    - far apart
    - randomly arranged
    - move in all directions
- Naming Compounds
  - 2 elements
    - ending is - ide
  - 3 or more
    - ending in something -ate
  - 2 identical elements
    - doesn't change
- Rocks
  - Igneous
    - Formed when molten magma is pushed up to the surface
    - contain various minerals
    - 2 types
      - Extrusive
        cools above ground
      - Intrusive
        cools underground
  - Sedimentary
    - Formed from layers of sediment
    - layers cemented together by other minerals
    - Fossils can form in sediments
  - Metamorphic
    - Formed when heat and pressure are exerted on rocks over long periods of time
    - some have layers
    - may have tiny crystals
- Chemical Change
  - no mass lost
  - word equations show
  - permanent change
  - change in energy
  - visible changes
- Reactivity Series
  - Very reactive
    - Potassium (K)
    - Sodium (Na)
    - Calcium (Ca)
  - Fairly reactive
    - Magnesium (Mg)
    - Aluminium (Al)
    - Zinc (Zn)
  - Not very reactive
    - Iron (Fe)
    - Lead (Pb)
    - Copper (Cu)
  - Not at all reactive
    - Silver (Ag)
    - Gold (Au)
- Reactions of Metals with Acids
  - violent reactions
    - Potassium
    - Sodium
    - Calcium
  - fairly well
    - Magnesium
    - Aluminium
    - Zinc
    - Iron
  - No reaction
    - Lead
    - Copper
    - Silver
    - Gold