Rates of Reactions

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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