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Question 1

What is the definition of the rate of reaction?

Answer 1

The rate of reaction is the speed at which reactants are converted into products in a chemical reaction.

Question 2

True or False: The rate of reaction can be affected by temperature.

Answer 2

True

Question 3

Fill in the blank: The rate of reaction increases with an increase in _______.

Answer 3

temperature

Question 4

Name one factor that can affect the rate of a chemical reaction.

Answer 4

Concentration of reactants

Question 5

What effect does increasing the surface area of a solid reactant have on the rate of reaction?

Answer 5

It increases the rate of reaction.

Question 6

Multiple Choice: Which of the following does NOT affect the rate of reaction? A) Temperature B) Surface area C) Color D) Concentration

Answer 6

C) Color

Question 7

What is meant by the term ‘catalyst’?

Answer 7

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

Question 8

True or False: Catalysts can be used up in a reaction.

Answer 8

False

Question 9

Fill in the blank: The rate of reaction can be measured by the change in _______ over time.

Answer 9

mass or concentration

Question 10

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

Answer 10

It decreases the rate of reaction.

Question 11

Short Answer: How does temperature affect particle collisions?

Answer 11

Higher temperatures increase the energy and frequency of particle collisions.

Question 12

Multiple Choice: Which of the following will increase the rate of reaction? A) Decreasing temperature B) Increasing concentration C) Reducing surface area D) Adding an inhibitor

Answer 12

B) Increasing concentration

Question 13

What is the role of an inhibitor in a chemical reaction?

Answer 13

An inhibitor slows down the rate of a reaction.

Question 14

True or False: The rate of reaction is always constant throughout the duration of the reaction.

Answer 14

False

Question 15

Fill in the blank: The rate of reaction can be expressed in terms of _______ change over time.

Answer 15

mass or concentration

Question 16

What is the effect of increasing pressure on the rate of reaction for gases?

Answer 16

It increases the rate of reaction.

Question 17

Short Answer: What are the units for measuring the rate of reaction?

Answer 17

Typically moles per liter per second (mol/L/s).

Question 18

Multiple Choice: Which factor does NOT typically affect the rate of reaction? A) Temperature B) Pressure C) Type of reaction D) Time of day

Answer 18

D) Time of day

Question 19

What is the collision theory?

Answer 19

The collision theory states that for a reaction to occur, particles must collide with sufficient energy and proper orientation.

Question 20

True or False: A higher concentration of reactants leads to more frequent collisions.

Answer 20

True

Question 21

Fill in the blank: The presence of a catalyst lowers the _______ energy required for a reaction.

Answer 21

activation

Question 22

What is activation energy?

Answer 22

Activation energy is the minimum energy required for a chemical reaction to occur.

Question 23

Short Answer: How does surface area affect the rate of reaction for solid reactants?

Answer 23

Increasing surface area allows more particles to collide, increasing the rate of reaction.

Question 24

Multiple Choice: Which of the following would increase the rate of a reaction? A) Decrease in temperature B) Increase in particle size C) Increase in pressure D) Decrease in concentration

Answer 24

C) Increase in pressure

Question 25

What is the relationship between temperature and kinetic energy in particles?

Answer 25

As temperature increases, the kinetic energy of particles increases.