All molecules are made of similar type of atom true or false

False

Explanation:

Not all molecules are compounds, since some molecules, such as oxygen gas (above image of molecule of-O2) or ozone (O3), consist only of one element or type of atom. Water is also a molecule because it is made from atoms that have been chemically combined.

well in order to answer this question you have to provide more information < 3

if you mean hydrogen and oxygen then water is the product