What happens to a catalyst used in a reaction? A. It is bonded to the products
B. It is unchanged by the reaction
C. It is used up in the reaction
D. It is broken up by the reactants ​

B. It is unchanged by the reaction

Explanation:

A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions.

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a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."