KINETICS
Flashcard
•
Chemistry
•
9th - 11th Grade
•
Practice Problem
•
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 by lowering the activation energy without being consumed in the reaction.
2.
FLASHCARD QUESTION
Front
How does particle size affect reaction rate?
Back
Smaller particle size increases the surface area exposed for the reaction, leading to a faster reaction rate.
3.
FLASHCARD QUESTION
Front
What happens to the reaction rate when temperature is decreased?
Back
The reaction rate decreases.
4.
FLASHCARD QUESTION
Front
What effect does increasing the concentration of a reactant have on the reaction rate?
Back
Increasing the concentration of a reactant increases the reaction rate.
5.
FLASHCARD QUESTION
Front
Define activation energy.
Back
The minimum energy required for a chemical reaction to occur.
6.
FLASHCARD QUESTION
Front
What is the role of the activated complex in a reaction?
Back
The activated complex is a temporary, unstable arrangement of atoms that forms during the transition from reactants to products.
7.
FLASHCARD QUESTION
Front
Explain the collision theory of chemical reactions.
Back
The collision theory states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation.
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