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Chapter 2 Science Term 1 - Coggle Diagram

- - - - Group 1A (except for hydrogen)tend to LOSE 1e- = X1+
      - Group 2A tend to LOSE 2e= X2+
      - Group 3A tend to LOSE 3e = X3+
      - Group 4A can GAIN or LOSE 4e = X4+/ X4-
      - Group 5A tend to GAIN 3e = X 3-
      - Group 6A tend to gain 2e= X2-
      - Group 7A tend to gain 1e= X1-
      - Group 8A DO NOT GAIN OR LOSE because they are already stable
- - - - Release H+ ions when dissolved in water
      - Description:
        
        Sour taste
        
        blue litmus paper turns red
        
        reacts with metals
        
        Formula= H+ nonmetal
    - - Release OH- ions when dissolved in water
      - Description:
        
        Bitter taste
        
        Feels slippery when dissolved in water
        
        Red litmus paper turns blue
        
        Formula= Metal+ OH
    - - Chemical bond of a metallic ion and a nonmetallic ion (excluding H+ and OH-)
      - Description:
        
        Litmus paper does not change colour
        
        Not easily dissolved in water
        
        Formula= metal+nonmetalS