Answer: A catalyst speeds up a chemical reaction, without being consumed by the reaction. It increases the reaction rate by lowering the activation energy for a reaction.
Explanation:
Answer:
substances
Explanation:
I would simply put it as catalysts are substances that increase the rate of a chemical reaction.
Keep in mind there are numerous synonyms for substances such as things etc. which could defintely be applicable as an answer therefore, the answers might vary.
