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Rate of reaction

Total questions: 185

Worksheet time: 4hrs 42mins

Name
Class
Date
1.

Increase in temperature causes the particles to

a)

slow down

b)

move faster

c)

stay apart from each other

d)

move in the correct order

2.

Increase in temperature causes the particles to

a)

slow down

b)

move faster

c)

stay apart from each other

d)

move in the correct order

3.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of reactant particles

d)

it increases the frequency of collision

4.

Why does a higher temperature increase the rate of a reaction?

a)

It increases both the frequency collision and energy of reactant particles

b)

It only increases the frequency of collision

c)

It only increases the energy of reactant particles

d)

It reduces the activation energy of the reaction

5.
What is the rate of reaction?
a)
How fast a reaction is 
b)
How big a reaction is
c)
How loud a reaction is
d)
How much gas a reaction produces
6.

Grinding an effervescent tablet into powder increases the rate of reaction due to increase of

a)

concentration

b)

total surface area

c)

temperature

d)

size

7.

Which factors increase the rate of a reaction?

a)

increasing temperature

b)

increasing concentration

c)

increasing total surface area

d)

All of these

8.

Increasing pressure causes the reacting particles

a)

to bond together

b)

to repel from each other

c)

gain more kinetic energy

d)

to move closer together

9.

Increasing the temperature gives particles more __________.

a)

time

b)

energy

c)

space

d)

frequency

10.

As the frequency of ________________ collision increases, the rate of reaction increases.

a)

time

b)

speed

c)

effective

d)

efficient

11.

You add more bodies into a "mosh pit" to hope for more collisions. You have increased

a)

temperature

b)

concentration

c)

pressure

d)

catalyst

12.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of particle collisions

d)

it increases the frequency of collisions

13.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
14.
a substance that is formed as the result of a chemical reaction
a)
Product 
b)
Reactant
c)
Starters
d)
Enders
15.

Which one shows that a chemical reaction has occurred?

a)

dissolving

b)

melting

c)

formation of a gas

d)

bending

16.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
17.
Which of the following IS a clue that a chemical change has occurred? 
a)
State of matter change
b)
Size Change
c)
Change in temperature
d)
Shape change
18.

Hard-boiled eggs are the a result of a chemical change because

a)

the eggs are the same size before vs after.

b)

the eggs have different properties (smell, taste, color) before vs after.

c)

the eggs weigh the same before vs after.

d)

the eggs went through a phase change.

19.

On a camping trip, Mr. Markowitz roasts a marshmallow in the campfire. He notices that the roasted marshmallow smells and tastes differently than the uncooked marshmallows. What change has taken place AND how does Mr. Markowitz know?

a)

A chemical change because the marshmallow changed in taste, color, and smell

b)

A chemical change because the marshmallow was heated up.

c)

Only a physical change because the marshmallow changed in size

d)

No change because the marshmallow is not a new substance

20.

Which of the following is a clue that a chemical change has occurred? (Choose all correct answers.)

a)

Formation of a gas (bubbles)

b)

Color change

c)

Phase change

d)

Produces light or heat

21.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
22.

Which of these is NOT a chemical reaction?

a)

Single displacement

b)

Synthesis

c)

Decomposition

d)

Stratification

23.

Increase in temperature causes the particles to

a)

slow down

b)

move faster

c)

stay apart from each other

d)

move in the correct order

24.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of reactant particles

d)

it increases the frequency of collision

25.

Why does a higher temperature increase the rate of a reaction?

a)

It increases both the frequency collision and energy of reactant particles

b)

It only increases the frequency of collision

c)

It only increases the energy of reactant particles

d)

It reduces the activation energy of the reaction

26.
What is the rate of reaction?
a)
How fast a reaction is 
b)
How big a reaction is
c)
How loud a reaction is
d)
How much gas a reaction produces
27.

Grinding an effervescent tablet into powder increases the rate of reaction due to increase of

a)

concentration

b)

total surface area

c)

temperature

d)

size

28.

Which factors increase the rate of a reaction?

a)

increasing temperature

b)

increasing concentration

c)

increasing total surface area

d)

All of these

29.

Increasing pressure causes the reacting particles

a)

to bond together

b)

to repel from each other

c)

gain more kinetic energy

d)

to move closer together

30.

Increasing the temperature gives particles more __________.

a)

time

b)

energy

c)

space

d)

frequency

31.

As the frequency of ________________ collision increases, the rate of reaction increases.

a)

time

b)

speed

c)

effective

d)

efficient

32.

You add more bodies into a "mosh pit" to hope for more collisions. You have increased

a)

temperature

b)

concentration

c)

pressure

d)

catalyst

33.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of particle collisions

d)

it increases the frequency of collisions

34.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
35.
a substance that is formed as the result of a chemical reaction
a)
Product 
b)
Reactant
c)
Starters
d)
Enders
36.

Which one shows that a chemical reaction has occurred?

a)

dissolving

b)

melting

c)

formation of a gas

d)

bending

37.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
38.
Which of the following IS a clue that a chemical change has occurred? 
a)
State of matter change
b)
Size Change
c)
Change in temperature
d)
Shape change
39.

Hard-boiled eggs are the a result of a chemical change because

a)

the eggs are the same size before vs after.

b)

the eggs have different properties (smell, taste, color) before vs after.

c)

the eggs weigh the same before vs after.

d)

the eggs went through a phase change.

40.

On a camping trip, Mr. Markowitz roasts a marshmallow in the campfire. He notices that the roasted marshmallow smells and tastes differently than the uncooked marshmallows. What change has taken place AND how does Mr. Markowitz know?

a)

A chemical change because the marshmallow changed in taste, color, and smell

b)

A chemical change because the marshmallow was heated up.

c)

Only a physical change because the marshmallow changed in size

d)

No change because the marshmallow is not a new substance

41.

Which of the following is a clue that a chemical change has occurred? (Choose all correct answers.)

a)

Formation of a gas (bubbles)

b)

Color change

c)

Phase change

d)

Produces light or heat

42.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
43.

Which of these is NOT a chemical reaction?

a)

Single displacement

b)

Synthesis

c)

Decomposition

d)

Stratification

44.

What are we trying to find out when investigating rate of reaction?

a)

The speed of the reaction

b)

The amount of gas the reaction produce

c)

The change in color

d)

The concentration of the solution

45.

What instrument are needed to measure the speed of reaction?

a)

Stopwatch or clock

b)

Thermometer

c)

Gas syringe

46.

Which chemical reaction is the gas syringe useful?

a)

Chemical reaction that produces gas

b)

Chemical reaction that changes color

c)

Chemical reaction that changes temperature

d)

Chemical reaction that changes concentration

47.

What is the function of gas syringe?

a)

Collect and measure amount of gas produced

b)

Collect and measure amount of liquid produced

c)

Measure the time it takes to become full

48.

A student use gas syringe to investigate rate of reaction for two chemical reactions.

How can he tell which one is faster?

a)

Find out which one collect more gas in a shorter time

b)

Find out which one collect the most gas after reaction ended

c)

Find out the temperature of the chemical when no more gas are collected

49.

Which of the following is the proper practical method when investigating rate of chemical reaction that produces gas?

a)

Check the amount of gas collected every minute.

b)

Check the amount of gas collected every hour.

c)

Check the amount of gas collected after the reaction ended.

50.

A student collects the data of two chemical reactions as shown.

How much gas is produced in experiment 1 after the reaction ended?



(a)  

51.

Which one have a higher rate of reaction?

a)

Experiment 1

b)

Experiment 2

c)

Both have the same rate of reaction

52.

How do we know experiment 1 have higher rate of reaction?

a)

After 1 min, experiment 1 produce more gas than experiment 2

b)

After 7 min, experiment 1 produce same amount of gas as experiment 2

c)

Before it started, experiment 1 and experiment 2 have 0 cm3 of gas.

53.

The graph shows two experiment done in different temperature of chemical.

What does the graph tells us?

a)

Experiment A have higher rate of reaction

b)

Experiment B have higher rate of reaction

c)

Experiment A and B have the same rate of reaction

54.

The graph shows two experiment done in different temperature of chemical.

How do we know experiment A have higher rate of reaction?

a)

Experiment A have a steep graph

b)

Experiment A have a flat graph towards the end

c)

Experiment A is labelled in red

55.

The graph shows two experiment done in different temperature of chemical.

What does the graph tells us?

a)

The higher the temperature of chemical, the higher the rate of reaction

b)

The higher the temperature of chemical, the higher amount of gas produced

c)

The higher the temperature of chemical, the longer it takes to complete the reaction

56.

A chemical reaction causes a color change and become opaque after a few minute.

How do we find the rate of reaction?

a)

Find out which one become opaque faster

b)

Find out which one become opaque slower

c)

Find out which one change temperature faster

d)

Find out which one change temperature slower

57.

Which of the following is the proper practical method when measuring rate of chemical reaction that change color? (Pick 3 answers)

a)

Put a mark under the beaker containing the chemicals

b)

Look at the mark from above the beaker

c)

Look at the mark from below the beaker

d)

Measure the temperature until we cannot see the mark.

e)

Measure the time until we cannot see the mark.

58.

A student collects the data of five chemical reactions as shown.

How long does the chemicals in experiment 2 become opaque?

(a)  

59.

Which experiment have higher rate of reaction?

a)

Experiment 5

b)

Experiment 1

c)

Experiment 2

d)

Experiment 3

e)

Experiment 4

60.

How do we know experiment 5 have higher rate of reaction?

a)

It take shorter time to become opaque

b)

It have higher concentration of sodium thiosulfate

c)

It take longer time to become opaque

61.

What does the experiment tells us?

a)

The higher the concentration of solution, the higher the rate of reaction

b)

The higher the concentration of solution, the solution become more opaque

c)

The higher the concentration of solution, the more experiment take place

62.

What are we trying to find out when investigating rate of reaction?

a)

The speed of the reaction

b)

The amount of gas the reaction produce

c)

The change in color

d)

The concentration of the solution

63.

What instrument are needed to measure the speed of reaction?

a)

Stopwatch or clock

b)

Thermometer

c)

Gas syringe

64.

Which chemical reaction is the gas syringe useful?

a)

Chemical reaction that produces gas

b)

Chemical reaction that changes color

c)

Chemical reaction that changes temperature

d)

Chemical reaction that changes concentration

65.

What is the function of gas syringe?

a)

Collect and measure amount of gas produced

b)

Collect and measure amount of liquid produced

c)

Measure the time it takes to become full

66.

A student use gas syringe to investigate rate of reaction for two chemical reactions.

How can he tell which one is faster?

a)

Find out which one collect more gas in a shorter time

b)

Find out which one collect the most gas after reaction ended

c)

Find out the temperature of the chemical when no more gas are collected

67.

Which of the following is the proper practical method when investigating rate of chemical reaction that produces gas?

a)

Check the amount of gas collected every minute.

b)

Check the amount of gas collected every hour.

c)

Check the amount of gas collected after the reaction ended.

68.

A student collects the data of two chemical reactions as shown.

How much gas is produced in experiment 1 after the reaction ended?



(a)  

69.

Which one have a higher rate of reaction?

a)

Experiment 1

b)

Experiment 2

c)

Both have the same rate of reaction

70.

How do we know experiment 1 have higher rate of reaction?

a)

After 1 min, experiment 1 produce more gas than experiment 2

b)

After 7 min, experiment 1 produce same amount of gas as experiment 2

c)

Before it started, experiment 1 and experiment 2 have 0 cm3 of gas.

71.

The graph shows two experiment done in different temperature of chemical.

What does the graph tells us?

a)

Experiment A have higher rate of reaction

b)

Experiment B have higher rate of reaction

c)

Experiment A and B have the same rate of reaction

72.

The graph shows two experiment done in different temperature of chemical.

How do we know experiment A have higher rate of reaction?

a)

Experiment A have a steep graph

b)

Experiment A have a flat graph towards the end

c)

Experiment A is labelled in red

73.

The graph shows two experiment done in different temperature of chemical.

What does the graph tells us?

a)

The higher the temperature of chemical, the higher the rate of reaction

b)

The higher the temperature of chemical, the higher amount of gas produced

c)

The higher the temperature of chemical, the longer it takes to complete the reaction

74.

A chemical reaction causes a color change and become opaque after a few minute.

How do we find the rate of reaction?

a)

Find out which one become opaque faster

b)

Find out which one become opaque slower

c)

Find out which one change temperature faster

d)

Find out which one change temperature slower

75.

Which of the following is the proper practical method when measuring rate of chemical reaction that change color? (Pick 3 answers)

a)

Put a mark under the beaker containing the chemicals

b)

Look at the mark from above the beaker

c)

Look at the mark from below the beaker

d)

Measure the temperature until we cannot see the mark.

e)

Measure the time until we cannot see the mark.

76.

A student collects the data of five chemical reactions as shown.

How long does the chemicals in experiment 2 become opaque?

(a)  

77.

Which experiment have higher rate of reaction?

a)

Experiment 5

b)

Experiment 1

c)

Experiment 2

d)

Experiment 3

e)

Experiment 4

78.

How do we know experiment 5 have higher rate of reaction?

a)

It take shorter time to become opaque

b)

It have higher concentration of sodium thiosulfate

c)

It take longer time to become opaque

79.

What does the experiment tells us?

a)

The higher the concentration of solution, the higher the rate of reaction

b)

The higher the concentration of solution, the solution become more opaque

c)

The higher the concentration of solution, the more experiment take place

80.

Which factors increase the rate of a reaction?

a)

increasing temperature

b)

increasing concentration

c)

increasing surface area

d)

all of these

81.

Reactions that give out heat to the surrounding are classified as one of the following:

a)

Spontaneous

b)

Exothermic

c)

sluggish

82.

Which of the following increase the reaction rate?

a)

less surface area

b)

lower temperature

c)

increased concentration

83.

What is the rate of reaction?

a)

How fast a reaction is

b)

How big a reaction is

c)

How loud a reaction is

84.

How can you increase the rate of a reaction?

a)

Decrease the pressure

b)

Decrease the concentration

c)

Increase the concentration

85.

Icing sugar has a greater ______ _____ than a solid cube of

sugar.

a)

Surface Area

b)

Catalyst

c)

Temperature

86.
Why does breaking up a solid reactant increase the rate of reaction?
a)
it creates more solid
b)
it creates more energy
c)
it increases the surface area
d)
it increases the concentration
87.

The word for a substance that you react at the start of a chemical reaction...

a)

Reaction

b)

Reactant

c)

Product

d)

The result

88.

The word for a substance created in a chemical reaction...

a)

Reaction

b)

Reactant

c)

Product

d)

Mass

89.

Objects hitting each other

a)

Collision

b)

Catalyst

c)

Explosion

d)

Reaction

90.

The speed at which a chemical reaction occurs

a)

Fast

b)

Slow

c)

Rate

d)

Ratio

91.

The amount of something; how many particles in a volume of a mixture

a)

Rate

b)

Collision

c)

Catalyst

d)

Concentration

92.

How is this equipment being used to measure the rate of reaction?

a)

The gas syringe measures how much gas is produced in a certain time

b)

The reaction mixture will increase in volume in a certain time

93.

Which factors increase the rate of a reaction?

a)

increasing temperature

b)

increasing concentration

c)

increasing surface area

d)

all of these

94.

Reactions that give out heat to the surrounding are classified as one of the following:

a)

Spontaneous

b)

Exothermic

c)

sluggish

95.

Which of the following increase the reaction rate?

a)

less surface area

b)

lower temperature

c)

increased concentration

96.

What is the rate of reaction?

a)

How fast a reaction is

b)

How big a reaction is

c)

How loud a reaction is

97.

How can you increase the rate of a reaction?

a)

Decrease the pressure

b)

Decrease the concentration

c)

Increase the concentration

98.

Icing sugar has a greater ______ _____ than a solid cube of

sugar.

a)

Surface Area

b)

Catalyst

c)

Temperature

99.
Why does breaking up a solid reactant increase the rate of reaction?
a)
it creates more solid
b)
it creates more energy
c)
it increases the surface area
d)
it increases the concentration
100.

The word for a substance that you react at the start of a chemical reaction...

a)

Reaction

b)

Reactant

c)

Product

d)

The result

101.

The word for a substance created in a chemical reaction...

a)

Reaction

b)

Reactant

c)

Product

d)

Mass

102.

Objects hitting each other

a)

Collision

b)

Catalyst

c)

Explosion

d)

Reaction

103.

The speed at which a chemical reaction occurs

a)

Fast

b)

Slow

c)

Rate

d)

Ratio

104.

The amount of something; how many particles in a volume of a mixture

a)

Rate

b)

Collision

c)

Catalyst

d)

Concentration

105.

How is this equipment being used to measure the rate of reaction?

a)

The gas syringe measures how much gas is produced in a certain time

b)

The reaction mixture will increase in volume in a certain time

106.

what is the collision theory?

a)

chemical reactions can only take place when the reacting particles collide with each other. the collisions must not have sufficient energy.

b)

the speed at which a chemical reaction takes place this is defined as proportional to increase in concentration

c)

physical reactions can only take place when the reacting particles collide with each other. the collisions must have sufficient energy.

d)

chemical reactions can only take place when the reacting particles collide with each other. the collisions must have sufficient energy.

107.

The higher the concentration, the more _______ in a given volume

a)

solvent only

b)

particles only

c)

molecules only

d)

all of the above

108.

The _____ of a chemical reaction _____when the_____ of one or more of the reactants increases

a)

rate, increases, concentration

b)

particles, increases, concentration

c)

rate, decreases, concentration

d)

particles, decreases, concentration

109.

the more particles, the higher the _____-

a)

collisions

b)

frequency of collisions

c)

activation energy

d)

temperature

110.

the higher the frequency of collisions, the higher the ____

a)

chance of collision

b)

chance of unsuccessful collisions

c)

chance of successful collisions

d)

chance of energetic collisions

111.

if the concentration of reactants is increased, there are more reactant particles moving together.

a)

true

b)

false

112.

concentration is not from the factors that affect the rate of reaction.

a)

true

b)

false

113.

decreasing the concentration of a reactant in a solution, will decrease the rate of a reaction

a)

true

b)

false

114.

what is the collision theory?

a)

chemical reactions can only take place when the reacting particles collide with each other. the collisions must not have sufficient energy.

b)

the speed at which a chemical reaction takes place this is defined as proportional to increase in concentration

c)

physical reactions can only take place when the reacting particles collide with each other. the collisions must have sufficient energy.

d)

chemical reactions can only take place when the reacting particles collide with each other. the collisions must have sufficient energy.

115.

The higher the concentration, the more _______ in a given volume

a)

solvent only

b)

particles only

c)

molecules only

d)

all of the above

116.

The _____ of a chemical reaction _____when the_____ of one or more of the reactants increases

a)

rate, increases, concentration

b)

particles, increases, concentration

c)

rate, decreases, concentration

d)

particles, decreases, concentration

117.

the more particles, the higher the _____-

a)

collisions

b)

frequency of collisions

c)

activation energy

d)

temperature

118.

the higher the frequency of collisions, the higher the ____

a)

chance of collision

b)

chance of unsuccessful collisions

c)

chance of successful collisions

d)

chance of energetic collisions

119.

if the concentration of reactants is increased, there are more reactant particles moving together.

a)

true

b)

false

120.

concentration is not from the factors that affect the rate of reaction.

a)

true

b)

false

121.

decreasing the concentration of a reactant in a solution, will decrease the rate of a reaction

a)

true

b)

false

122.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

123.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

124.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of particle collisions

d)

it increases the frequency of particle collisions

125.

Why does a higher temperature increase the rate of a reaction?

a)

it increases both the frequency and energy of particle collisions

b)

it only increases the frequency of particle collisions

c)

it only increases the energy of particle collisions

d)

it reduces the activation energy of the reaction

126.

what factors can affect the value of the activation energy of a reaction?

a)

The presence of a catalyst

b)

changes in temperature

c)

changes in concentration of the reactants

d)

changes in pressure

127.
Catalysts are thought to increase the rate of a chemical reaction by
a)
supplying the energy needed to overcome the activation energy
b)
increasing the temperature of the reaction
c)
providing less surface area for the reaction
d)
providing an alternative reaction pathway with a lower activation energy
128.
Increasing the temperature of a chemical reaction
a)
lowers the activation energy of the reaction
b)
increases the energy of the reactant particles only
c)
increases the value of ΔH for the reaction
d)
increases the energy of the reactant and product particles
129.
What is the rate of reaction?
a)
How fast a reaction is 
b)
How big a reaction is
c)
How loud a reaction is
d)
How much gas a reaction produces
130.

Grinding a effervescent tablet into powder increases the rate of reaction due to increased

a)

concentration

b)

surface area

c)

temperature

d)

reactants

131.

The ______________is required to break the bonds of the reactants.

a)

Carbonic energy

b)

Activation energy

c)

Plutonic energy

d)

Energi Gaib

132.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
133.
Smaller particle size allows for a _________ surface area to be exposed for the reaction.
a)
larger
b)
smaller
134.
Exothermic reactions release heat to the surroundings.
a)
true
b)
false
135.
What type of reaction is this?
a)
Endothermic
b)
Exothermic
136.

What type of reaction is this?

a)

Endothermic

b)

Exothermic

137.

A chemical reaction in which energy is absorbed is ______________.

a)

an endothermic reaction

b)

an exothermic reaction

c)

a single replacement reaction

d)

a double replacement reaction

138.

Table 4 shows the total volume of gas evolved at different intervals for the dissociation of hydrogen peroxide.


What is the average rate of reaction in the second minute?

a)

14.0 cm3 min-1

b)

16.0 cm3 min-1

c)

18.0 cm3 min-1

d)

28.0 cm3 min-1

139.

When we investigate the rate of reaction we are looking at the...

a)

amount of product formed

b)

speed of reaction

c)

concentration of reacting particles

d)

combining reactants with products

140.
The rate of a chemical reaction is NOT affected by which of the following:
a)
temperature
b)
concentration
c)
particle size (surface area)
d)
All of these affect reaction rates
141.
Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.
a)
false
b)
true
142.
A reaction has the rate law: Rate = k [A][B].
What is the overall order of reaction?
a)
1st
b)
2nd
c)
3rd
d)
4th
143.
A possible rate law for a third overall order of a reaction is __________________
a)
Rate = k [A]2[B]2
b)
Rate = k [A][B]3
c)
Rate = k [A]3 [B]
d)
Rate = k [A]2[B]
144.
A reaction has the rate law: Rate = k [A][B].
What will happen to the rate of reaction if the concentration of A is doubled and the concentration of B is tripled?
a)
increases by a factor of 3
b)
increases by a factor of 4
c)
increases by a factor of 5
d)
increases by a factor of 6
145.

Reaction order defines...

a)

how many reactions a reactant can do

b)

how the rate is affected by the concentration of that reactant

c)

the weight of reactants of a chemical reaction

d)

the order in which the reactants line-up to react and form products

146.

What is the letter used to represent the Specific rate constant?

a)

t

b)

p

c)

k

d)

l

147.

To find the reaction order of a reactant we...

a)

look at the superscript number

b)

look at the big numbers

c)

add all the subscripts up together

148.

How do we find the overall order of a chemical reaction?

a)

Add all the reaction orders of each reactant

b)

Subtract all the reaction orders of each reactant

c)

Multiplyall the reaction orders of each reactant

d)

We need to find moles, add them all together and multiply by 100

149.

If the concentration of [A] is doubled, and the rate of the reaction also doubles. What reaction order is [A]?

a)

Zero-order

b)

First-order

c)

Second-order

d)

Triple-order

150.

Look at the rate equation: Rate=k[H2O][HCl]


What is the overall order of the reaction?

a)

first-order

b)

second-order

c)

third-order

d)

fourth-order

151.
What is the activation energy?
a)
The energy of the products
b)
The energy of the reactants
c)
The minimum energy needed by the reactants to form the products.
d)
The energy lost in the reaction
152.
According to collision theory, what must the reactants have in order to form products?
a)
The right size
b)
The right shape
c)
Enough energy
d)
Nothing
153.
Products will form faster if____________
a)
the particle size of the reactants are larger.
b)
temperature is decreased.
c)
concentration of the reactants are increased.
d)
the reaction is not stirred.
154.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

155.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

156.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of particle collisions

d)

it increases the frequency of particle collisions

157.

Why does a higher temperature increase the rate of a reaction?

a)

it increases both the frequency and energy of particle collisions

b)

it only increases the frequency of particle collisions

c)

it only increases the energy of particle collisions

d)

it reduces the activation energy of the reaction

158.

what factors can affect the value of the activation energy of a reaction?

a)

The presence of a catalyst

b)

changes in temperature

c)

changes in concentration of the reactants

d)

changes in pressure

159.
Catalysts are thought to increase the rate of a chemical reaction by
a)
supplying the energy needed to overcome the activation energy
b)
increasing the temperature of the reaction
c)
providing less surface area for the reaction
d)
providing an alternative reaction pathway with a lower activation energy
160.
Increasing the temperature of a chemical reaction
a)
lowers the activation energy of the reaction
b)
increases the energy of the reactant particles only
c)
increases the value of ΔH for the reaction
d)
increases the energy of the reactant and product particles
161.
What is the rate of reaction?
a)
How fast a reaction is 
b)
How big a reaction is
c)
How loud a reaction is
d)
How much gas a reaction produces
162.

Grinding a effervescent tablet into powder increases the rate of reaction due to increased

a)

concentration

b)

surface area

c)

temperature

d)

reactants

163.

The ______________is required to break the bonds of the reactants.

a)

Carbonic energy

b)

Activation energy

c)

Plutonic energy

d)

Energi Gaib

164.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
165.
Smaller particle size allows for a _________ surface area to be exposed for the reaction.
a)
larger
b)
smaller
166.
Exothermic reactions release heat to the surroundings.
a)
true
b)
false
167.
What type of reaction is this?
a)
Endothermic
b)
Exothermic
168.

What type of reaction is this?

a)

Endothermic

b)

Exothermic

169.

A chemical reaction in which energy is absorbed is ______________.

a)

an endothermic reaction

b)

an exothermic reaction

c)

a single replacement reaction

d)

a double replacement reaction

170.

Table 4 shows the total volume of gas evolved at different intervals for the dissociation of hydrogen peroxide.


What is the average rate of reaction in the second minute?

a)

14.0 cm3 min-1

b)

16.0 cm3 min-1

c)

18.0 cm3 min-1

d)

28.0 cm3 min-1

171.

When we investigate the rate of reaction we are looking at the...

a)

amount of product formed

b)

speed of reaction

c)

concentration of reacting particles

d)

combining reactants with products

172.
The rate of a chemical reaction is NOT affected by which of the following:
a)
temperature
b)
concentration
c)
particle size (surface area)
d)
All of these affect reaction rates
173.
Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.
a)
false
b)
true
174.
A reaction has the rate law: Rate = k [A][B].
What is the overall order of reaction?
a)
1st
b)
2nd
c)
3rd
d)
4th
175.
A possible rate law for a third overall order of a reaction is __________________
a)
Rate = k [A]2[B]2
b)
Rate = k [A][B]3
c)
Rate = k [A]3 [B]
d)
Rate = k [A]2[B]
176.
A reaction has the rate law: Rate = k [A][B].
What will happen to the rate of reaction if the concentration of A is doubled and the concentration of B is tripled?
a)
increases by a factor of 3
b)
increases by a factor of 4
c)
increases by a factor of 5
d)
increases by a factor of 6
177.

Reaction order defines...

a)

how many reactions a reactant can do

b)

how the rate is affected by the concentration of that reactant

c)

the weight of reactants of a chemical reaction

d)

the order in which the reactants line-up to react and form products

178.

What is the letter used to represent the Specific rate constant?

a)

t

b)

p

c)

k

d)

l

179.

To find the reaction order of a reactant we...

a)

look at the superscript number

b)

look at the big numbers

c)

add all the subscripts up together

180.

How do we find the overall order of a chemical reaction?

a)

Add all the reaction orders of each reactant

b)

Subtract all the reaction orders of each reactant

c)

Multiplyall the reaction orders of each reactant

d)

We need to find moles, add them all together and multiply by 100

181.

If the concentration of [A] is doubled, and the rate of the reaction also doubles. What reaction order is [A]?

a)

Zero-order

b)

First-order

c)

Second-order

d)

Triple-order

182.

Look at the rate equation: Rate=k[H2O][HCl]


What is the overall order of the reaction?

a)

first-order

b)

second-order

c)

third-order

d)

fourth-order

183.
What is the activation energy?
a)
The energy of the products
b)
The energy of the reactants
c)
The minimum energy needed by the reactants to form the products.
d)
The energy lost in the reaction
184.
According to collision theory, what must the reactants have in order to form products?
a)
The right size
b)
The right shape
c)
Enough energy
d)
Nothing
185.
Products will form faster if____________
a)
the particle size of the reactants are larger.
b)
temperature is decreased.
c)
concentration of the reactants are increased.
d)
the reaction is not stirred.