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Molecules

Atoms Molecules Ions Chemical Equations On-line practice

 

 
  1. A molecule consists of two or more atoms chemically combined together.
  2. Molecules of elements consist of fixed number of the same type of atom chemically combined together. For example, H2 and O2.

                        

 

  1. Molecules of compounds consist of fixed number of two or more different types of atoms chemically combined together. For example, H2O and NH3.

         

                                       

Representing Molecules ]