Always speeds the reation ratedoes not affect the reation rateundergoes a chemical changedoes not become part of the chemical changealways slows the reation rate
Always speeds the reaction rate.
Does not become part of the chemical change. I am guessing that this is a multiple guess test and the answer you are looking for is D.
The best answer is speeds the reaction rate. Generally it lowers the activation energy so that the reaction can proceed easier. Enzymes can be considered catalysts in the body that allow digestion to occur at a temperature like body temp, where it would go faster at a higher temp.
A catalyst does not ever become part of the chemical change. As far as I know, it always speeds up the reaction, but I could be wrong on that if there is only one correct answer. For sure, it's never changed by the reaction. That is part of a catalyst's definition.
the BEST ans is does not become part of the chemical change!!!!! *Defination of catalyst:catalyst is a chemical substance that will CHANGES the rate of reaction.it does not undergoes any chemical changes catalyst affect the reation rate!!! catalyst can divide into positive and negative catalyst so it can changes(either SPEEDS or SLOWS) the reaction rate
