hydrogen peroxide decomposes into water and oxygen when exposed to heat or light. A tightly capped bottle of hydrogen peroxide is placed on a balance and exposed to light for three weeks. The mass reading on the balance does not change. This is an example of what?

Question

nincompoop · Answer

once the bonds changed it is a chemical reaction

anonymous · Answer

thnx

jfraser · Answer

Because the mass is CONSTANT, it's an example of the law of conservation of mass through a chemical reaction