Question

Which of the following statements is true about catalysts?
a.
Catalysts slow down the rate of chemical reactions.
b.
All catalysts are enzymes.
c.
Catalysts are used up during a chemical reaction.
d.
Catalysts lower the activation energy of a chemical reaction.
e.
Catalysts increase the activiation energy of a chemical reaction.

Answer 1

i know a catalyst can accelerate a reaction......

Answer 2

so i dont think its A

Answer 3

What else can you eliminate?

Answer 4

All enzymes are catalysts but not all catalysts are enzyme so .... ?

Answer 5

i think its D

Answer 6

Yup! I think so too!

Answer 7

A catalyst is a substance that increases the rate of a chemical reaction (by lowering it's activation energy) without itself undergoing any permanent chemical change (and thus is not used up in the reaction).