Reaction Rates and Activation Energy
Quiz
•
Science
•
10th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The catalyst alters the rate of a chemical reaction by,
providing an alternative pathway with a lower Ea
changing the products formed in the direction of the reaction
providing a surface on which the molecules react
increasing the frequencies of collisions between molecules
Tags
NGSS.HS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following are true of reaction rates?
II+III+IV
I+IV
II + III
I+II+III
Tags
NGSS.HS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following best describes why increasing temperature increase reaction rate?
Activation energy is reduced.
Collisions become more frequent.
Collisions become more energetic.
Collisions become more frequent and more energetic.
Tags
NGSS.HS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following statements about the catalyst is true?
A catalyst accelerates the rate of reaction by bringing down the activation energy.
A catalyst does not participate in reaction mechanism.
A catalyst makes the reaction feasible by making ∆G more negative.
A catalyst makes equilibrium constant more favorable for forward reaction.
Tags
NGSS.HS-PS1-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An addition of a catalyst to the following reaction would have what effect?
A would be increased
B would be increased
C would be decreased
No change
Tags
NGSS.HS-PS1-4
NGSS.HS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Limestone chunks are reaction with hydrochloric acid solution at constant temperature with average speed. If we crash the chunks of limestone into powder how would speed of reaction change?
Reaction speeds up
Reaction does not change
Reaction slows down
Reaction stops
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following is NOT a factor affecting reaction rate?
temperature
catalysts
particle size
polarity
Tags
NGSS.HS-PS1-5
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