Which is not a compound?

H 2O
6CaO
5HCl
H 2

below

Explanation:

h2 is not a compound

H2 is not a compound

Explanation:

This is because it is made up of only one element and a compound is the chemical combination of two or more elements

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.

its temperature is increasing. this causes molecular vibrations to increase.