H20 can be a molecule or a compound because it is made up of Hydrogen(H)
and oxygen (O)
<span>In physics, the law of conservation of energy states that the total energy of an isolated system remains constant—it is said to be conserved over time. Energy can neither be created nor destroyed; rather, it transforms from one form to another.</span>
Answer:
Proton is a sub atomic particle while oxygen is an atom ....
