chemical bonding
elements react to form compounds by gaining or losing electrons or by sharing electrons.
when two substances react together they make a new substance and it is difficult to separate them. some atoms react by sharing electrons and we call this covalent bonding. other ataoms react by gaining or losing electrons this leads to ionic bonding .
ionic compounds are held togethre by strong forces between the oppositely charged ions. this is called ionic bonding e.g group 2and 6 in the periodic table.
covalent bonds are formed when atoms share electrons. covalent bonds consits of molecules but some have giant covalent structures.
the atoms in metals are arranged in regular layers.
- Created by: Estell
- Created on: 01-04-12 20:12
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