1 (a.b.) Water is a COMPOUND

You have probably have seen water abbreviated as H2O. Water is not an element it's a compound because it is made of two or more elements.  In this case oxygen and hydrogen. By a chemical process we can divide water into these TWO elements but that is as far as we go. You have probably have seen water abbreviated as H2O. Which has tow hydrogen atoms and one oxygen atom.  All compounds are considers molecules but not all molecules are considered compounds.