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IGCSE chem2 - Coggle Diagram

- - - - lose electrons(positive ions(cations))
  - - - gains(negative ions(anions))
        
        non-metals react with metals = ionic compounds
        
        2Na+Cl2-->2NaCl
  - - - Covalent: prefixes to indicate number of atoms of element(carbon dioxide, nitrogen trichloride)
      - Ionic: metal first then non-metal with -ide ending
    - - forming: 2H₂ + O₂ → 2H₂O
      - decomposing: 2H₂O → 2H₂ + O₂
- - - - Acid+Carbonate: Acid+Carbonate→Salt+Carbon dioxide+Water
        
        Displacement: Zinc(Zn)+Copper sulfate(CuSO₄)→Zinc sulfate(ZnSO₄)+Copper(Cu)
        
        Combustion Reactions: Methane(CH₄)+Oxygen(O₂)→Carbon dioxide(CO₂)+Water(H₂O)
        
        Oxidation-Reduction(Redox): Copper(Cu)+oxygen(O₂)-->Copper oxide(CuO), Copper is oxidized
        
        Precipitation Reactions:Barium chloride(BaCl₂)+Sodium sulfate(Na₂SO₄)→Barium sulfate(BaSO₄)+Sodium chloride(NaCl)
        
        oxidization: loss of electrons get reduced, increased oxidisation, Fe-->Fe3+ +3e-
        
        reduction: gain get oxidised, decrease, Cu2++2e- -->Cu
- - - - ionic: shows ion ratio(NaCl-->Na+Cl-)
  - - - has to be ionicly neutral, if not, take more to balance, (must be equal to 0 together)
        
        Mg+(2 valency) and Cl-(1 valency), take two Cl- for each Mg+