Chemistry C2 AQA

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C2
- Alkali metals
  - Group 1 elements
  - all react with water
  - Reactivity increases down the group
  - groups 1 and 7 react to make salt
- Transition metals
  - In between groups 2 and 3
  - Most are unreactivee.g. silver
  - Can be good conductors of heat and electricity
  - Form coloured compounds
- Catalysts
  - Speeds up the rate of a reaction
  - Doesn't get used up
  - Particles need to collide for reactions to occur
    - Catalysts help bring particle together
- The halogens
  - Group 7 elements
  - non-metals
  - reactivity decreases down the group
  - groups 1 and 7 react to make salt
Alkali metals
- Group 1 elements
- all react with water
- Reactivity increases down the group