Answer:
Chemical energy
Explanation:
When the body eats food our bodies convert the stored energy (calories) to chemical energy, allowing us to function.
B - To increase the rate of the reaction
Catalysts speed up the reaction without being reactants or products, so aren't used up in the reaction.
12-6
Zn + O2 = ZnO
Mg + O2 = MgO
Cu + O2 = CuO
Al + O2 = Al2O3
true
