what is an atom?
what is a molecule?
how are they related?
which is the smallest unit of an element?
which is the smallest unit of a compound?
which is the smallest unit of matter?
who invented atoms?
who invented molecules?
who invented the sub atomic particles of atom?
give a brief description of the sub atomic particles of an atom.
explain Dalton's atomic theory.
explain Rutherford's atomic theory.
