Molecules(Molecules of an Element and Molecules of a Compound)

Molecules
Molecules are groups or clusters of atoms held together by means of chemical bonding.  There
are two types of molecule; molecules of an element and molecules of a compound.

1. Molecules of an Element                                                                                                                  In certain cases, two single atoms of an element can be attracted to one another by a bond to form a molecule.  Examples of this are hydrogen, oxygen, and bromine.
2. Molecules of a Compound                                                                                                        Two atoms of different elements held together by a bond form a compound.  The molecule is the primary particle of a chemical compound. Some examples of this type of molecule include hydrogen chloride , water , methane andammonia .