AP Chemistry Unit 5

AP Chemistry Unit 5

11th Grade

25 Qs

quiz-placeholder

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AP Chemistry Unit 5

AP Chemistry Unit 5

Assessment

Quiz

Science

11th Grade

Hard

NGSS
HS-PS1-5, HS-PS1-4, HS-PS3-1

+2

Standards-aligned

Created by

Lisa Thompson

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which step of a reaction mechanism determines the rate?

the slow step

the fast step

the first step

the second step

Answer explanation

The slow step of a reaction mechanism determines the rate because it is the step with the highest activation energy, leading to the overall rate of the reaction.

Tags

NGSS.HS-PS1-5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How does a catalyst speed up a reaction?

Adding more reactant

Providing a pathway that has a lower activation energy

Increasing the activation energy

Increasing binding energy

Answer explanation

A catalyst speeds up a reaction by providing a pathway with a lower activation energy, making it easier for the reaction to occur.

Tags

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

More collisions correspond to a: 

Faster reaction rate  

Slower reaction rate

Constant reaction rate 

None of the above

Answer explanation

More collisions correspond to a faster reaction rate because a higher frequency of collisions leads to more successful reactions occurring in a given time period.

Tags

NGSS.HS-PS1-5

4.

MATCH QUESTION

1 min • 1 pt

Match the following properties with their classification as either an intensive or extensive property.

Temperature at which an object changes from solid to liquid

Silver

Color of an object

Melting point

Appearance of an object

Metallic

Amount of matter in an object

Mass

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Is this an endothermic or exothermic reaction?

endothermic

exothermic

Answer explanation

The correct choice is 'endothermic' because this reaction absorbs heat from its surroundings, resulting in a decrease in temperature.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the potential energy of the products?

100 kJ

250 kJ

50 kJ

200 kJ

Answer explanation

The potential energy of the products is 100 kJ, as indicated in the correct answer choice.

Tags

NGSS.HS-PS1-4

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the name of k that appears in the equation used to calculate the rate of a chemical reaction?

Reaction Rate

Rate Equation

Rate Law

Rate Constant

Answer explanation

The name of k that appears in the equation used to calculate the rate of a chemical reaction is Rate Constant.

Tags

NGSS.HS-PS1-5

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