Final answer:
The oxidizer added to hydrogen peroxide to increase its chemical action or lifting power is a developer. Catalysts like manganese (IV) oxide can increase the rate of the decomposition reaction without being used up.
Step-by-step explanation:
The oxidizer added to hydrogen peroxide to increase its chemical action or lifting power is a Developer. Hydrogen peroxide naturally decomposes to produce water and oxygen gas, but the reaction is very slow. However, the addition of just a small amount of manganese (IV) oxide to hydrogen peroxide will cause it to decompose completely in just a matter of minutes. This demonstrates the role of a catalyst in increasing the rate of the reaction without being used up.