Chapter 1 : MATTER
1.1    Atoms and Molecules
1.2     Mole Concept

Learning Outcome
   At the end of this topic, students should be able :
  
   (a) Identify and describe proton, electron and
        neutron as subatomic particle.

   (b) Define proton number, Z, nucleon number, A
         and isotope. Write isotope notation.
   (c) Define relative atomic mass, Ar and
       relative molecular mass, Mr based on
       the C-12 scale.

   (d) Sketch and explain the following main
       components of a ...
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