Multiple choice

Directions: Choose the one that is most nearly the same in meaning to the keyword Catalyst

  1. agent to slow down chemical reaction

  2. stimulus to change

  3. a chemical reaction

  4. sedative
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A catalyst is a substance that increases the rate of a chemical reaction, or more generally, a person or thing that precipitates an event or change.

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