Classify each statement about catalysts as true or false. 1. Biological catalysts are known as enzymes. 2. A catalyst is chemically unaltered during the chemical reaction and therefore is reused over and over again in a reaction. 3. A catalyst lowers the activation energy for a reaction. 4. A catalyst is always used in high concentration. 5. A catalyst speeds up the rate of a reaction.

Introductory Chemistry: An Active Learning Approach
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Chapter18: Chemical Equilibrium
Section: Chapter Questions
Problem 14E
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Classify each statement about catalysts as true or false.

1. Biological catalysts are known as enzymes.

2. A catalyst is chemically unaltered during the chemical reaction and therefore is reused over and over again in a reaction.

3. A catalyst lowers the activation energy for a reaction.

4. A catalyst is always used in high concentration.

5. A catalyst speeds up the rate of a reaction.

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