RATE OF REACTION

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: Increasing the temperature generally increases the rate of reaction.

Answer 2

True

Question 3

Fill in the blank: The ________ theory explains how reactions occur at the molecular level.

Answer 3

collision

Question 4

What effect does increasing concentration have on the rate of reaction?

Answer 4

Increasing concentration usually increases the rate of reaction.

Question 5

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

Answer 5

C) Color

Question 6

What role do catalysts play in chemical reactions?

Answer 6

Catalysts speed up the rate of reaction without being consumed in the process.

Question 7

True or False: A higher surface area of a reactant will decrease the rate of reaction.

Answer 7

False

Question 8

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

Answer 8

Increasing pressure increases the rate of reaction for gases by reducing the volume and increasing concentration.

Question 9

Fill in the blank: The ________ of a reaction can be measured by the change in concentration of reactants or products over time.

Answer 9

rate

Question 10

Multiple choice: Which of the following is a common unit for measuring the rate of reaction? A) Moles per liter B) Grams per second C) Liters per hour D) Moles per liter per second

Answer 10

D) Moles per liter per second

Question 11

What happens to the rate of reaction as the reaction proceeds and reactants are used up?

Answer 11

The rate of reaction generally decreases as the concentration of reactants decreases.

Question 12

True or False: The nature of reactants can influence the rate of reaction.

Answer 12

True

Question 13

What is meant by ‘activation energy’?

Answer 13

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

Question 14

Fill in the blank: A ________ is a substance that slows down the rate of reaction.

Answer 14

inhibitor

Question 15

Multiple choice: Which of the following factors is least likely to affect the rate of reaction? A) The presence of a catalyst B) The temperature C) The color of the reactants D) The surface area

Answer 15

C) The color of the reactants