ABSTRACT
A molecule has a group of atoms which have strong bonds among themselves but relatively weak bonds to
adjacent molecules. Examples of small molecules are water (H2O), methanol (CH3OH), car bon dioxide,
and so on. Poly mers contain thousands to millions of atoms in a molecule which is large; they are also called
macromolecules. Poly mers are prepared by joining a large number of small molecules called monomers.
