What do water and hydrogen Perioxide have in common?

Answer:
Water molecules in the form of steam are moving very fast with large spaces between the molecules. Water and hydrogen peroxide are made of the same elements: oxygen and hydrogen. However, hydrogen peroxide (H2O2) has 1 more oxygen than water (H2O).
Explanation:
Answer:
a. Hydrogen
Explanation:
They both contain two hydrogen atoms
[tex]H_{2} O_{2} \\H_{2}O[/tex]
Hydrogen peroxide: two hydrogen atoms (H2) and two oxygen atoms (O2)
Water: two hydrogen atoms (H2) and one oxygen atom (O)