C2 revision on bondings.

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  • Created by: Roxy
  • Created on: 09-01-11 14:14

Chemical bonding:

  • Mixing and reacting are two very different things. For example, we can mix sand and salt together and separate them easily. 
    • However, when the atoms of two or more elements react, they make a new compound which is different to both of the starting atoms. 
  • The alkali metals react easily with the halogens because the alkali metals must lose an electron to gain a full outer shell, and so pass it on to the halogens, which need to must gain one to make a full outer shell. 

Sharing electrons - Covalent bonding 

Transferring electrons - Ionic bonding

Covalent bonding: 

non-metal + non-metal

Giant covalent structures:


    • made of carbon
    • high melting and boiling points


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