Rates of Reactions

Rates of Reactions

Assessment

Flashcard

Chemistry

10th - 12th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction without being consumed in the process.

2.

FLASHCARD QUESTION

Front

How does a catalyst affect the activation energy of a reaction?

Back

It lowers the activation energy required for the reaction to occur.

3.

FLASHCARD QUESTION

Front

What is the effect of concentration on the rate of reaction?

Back

Higher concentration of reactants generally increases the rate of reaction.

4.

FLASHCARD QUESTION

Front

How does temperature affect the rate of a chemical reaction?

Back

Increasing temperature usually increases the rate of reaction by providing more energy to the reactants.

5.

FLASHCARD QUESTION

Front

What is surface area in the context of chemical reactions?

Back

Surface area refers to the exposed area of a solid reactant; increasing surface area increases the rate of reaction.

6.

FLASHCARD QUESTION

Front

What is an endothermic reaction?

Back

A reaction that absorbs heat from its surroundings, usually resulting in a temperature decrease.

7.

FLASHCARD QUESTION

Front

What is an exothermic reaction?

Back

A reaction that releases heat to its surroundings, usually resulting in a temperature increase.

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