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18.1 Reaction Rates (Kinetics)

Total questions: 136

Worksheet time: 2hrs 26mins

Name
Class
Date
1.
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
2.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
3.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
4.
Catalysts permit reactions to proceed along a ___________energy path.
a)
lower
b)
higher
5.
Smaller particle size allows for a _________ surface area to be exposed for the reaction.
a)
larger
b)
smaller
6.
Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.
a)
false
b)
true
7.
Increasing the concentration of the reactants will slow down the reaction.
a)
false 
b)
true
8.
Exothermic reactions release heat to the surroundings.
a)
true
b)
false
9.

The ____________ states that atoms, ions, or molecules must collide in order to react.

a)

transition state

b)

activation energy

c)

rate law

d)

collision theory

10.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
11.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
12.
The ___________ the surface area of the reactants, the faster the reaction rate.
a)
larger 
b)
smaller
13.
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
14.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
15.
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.
16.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
17.
Catalysts permit reactions to proceed along a ___________energy path.
a)
lower
b)
higher
18.
Smaller particle size allows for a _________ surface area to be exposed for the reaction.
a)
larger
b)
smaller
19.
The ___________ the surface area of the reactants, the faster the reaction rate.
a)
larger 
b)
smaller
20.
Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.
a)
false
b)
true
21.
Usually lowering the temperature will slow down a reaction.
a)
false
b)
true
22.
Increasing the concentration of the reactants will slow down the reaction.
a)
false 
b)
true
23.
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
24.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
25.
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.
26.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
27.
Smaller particle size allows for a _________ surface area to be exposed for the reaction.
a)
larger
b)
smaller
28.
Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.
a)
false
b)
true
29.
Usually lowering the temperature will slow down a reaction.
a)
false
b)
true
30.
Exothermic reactions release heat to the surroundings.
a)
true
b)
false
31.
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.
32.

Which of the following increase the reaction rate?

a)

less surface area

b)

lower temperature

c)

increasing pressure

d)

increased concentration

33.
A catalyst works by
a)
changing the order of the reaction
b)
increasing the temperature
c)
lowering the activation energy
d)
making the activated complex
34.

If the temperature is reduced, a reaction rate will ______

a)

increase

b)

decrease

c)

stay the same

35.

The ____________ states that atoms, ions, or molecules must collide in order to react.

a)

transition state

b)

activation energy

c)

rate law

d)

collision theory

36.
The ___________ the surface area of the reactants, the faster the reaction rate.
a)
larger 
b)
smaller
37.

_______ refers to how much solute is dissolved in

a solution.

a)

Surface Area

b)

Catalyst

c)

Temperature

d)

Concentration

38.

Which of the following increase the reaction rate?

a)

less surface area

b)

lower temperature

c)

increasing pressure

d)

increased concentration

39.
A catalyst works by
a)
changing the order of the reaction
b)
increasing the temperature
c)
lowering the activation energy
d)
making the activated complex
40.

If the temperature is reduced, a reaction rate will ______

a)

increase

b)

decrease

c)

stay the same

41.

If the concentration of a reactant is increased, the reaction rate will ___________.

a)

increase

b)

decrease

c)

stay the same

42.

The ____________ states that atoms, ions, or molecules must collide in order to react.

a)

transition state

b)

activation energy

c)

rate law

d)

collision theory

43.
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
44.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
45.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
46.
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.
47.
The ___________ the surface area of the reactants, the faster the reaction rate.
a)
larger 
b)
smaller
48.

Which of the following CAN affect reaction rates? Check all that apply?

a)

temperature

b)

concentration

c)

surface area

d)

catalysts

49.

How will a rate of reaction be altered if temperature is increased?

a)

reaction rate decreases (goes slower)

b)

reaction rate increases (goes faster)

c)

reaction rate is constant (stays the same)

50.

Products will form faster if which of the following occurs? Select all that apply.

a)

surface area is increased

b)

temperature is decreased

c)

reactant concentration is increased

d)

the reactant solution is not stirred

51.

Which of the following increases a reaction rate without being used up?

a)

catalyst

b)

product

c)

reactant

52.

How does a catalyst affect a reaction rate?

a)

it makes the reaction faster by lowering the activation energy and energy needed to form the activated complex

b)

it makes the reaction faster by raising the activation energy and energy needed to form the activated complex

c)

it makes the reaction slower by lowering the activation energy and energy needed to form the activated complex

d)

it makes the reaction slower by raising the activation energy and energy needed to form the activated complex

53.

When a sugar cube is crushed up, the particles get smaller. How has the surface area of the particles changed?

a)

the surface area increases

b)

the surface area decreases

c)

the surface area remains constant

54.

When surface area increases, the reaction rate does which of the following?

a)

goes faster (rate increases)

b)

goes slower (rate decreases)

55.

Increasing the temperature will increase the kinetic energy of particles, therefore increasing the frequency of the collisions among particles.

a)

false

b)

true

56.

If solution A is put into an ice water bath before being combined with solution B, how would the reaction rate be altered?

a)

it would be faster (rate increases)

b)

it would be slower (rate decreases)

57.

How does increasing the concentration affect a reaction rate?

a)

makes it go faster (increases rate)

b)

makes it go slower (decreases rate)

58.

Which of the following will increase the reaction rate (make it go faster) on an all gas system?

a)

decreasing the surface area of a reactant

b)

lowering the temperature of a reactant

c)

increasing pressure of the container

d)

increasing reactant concentration

59.

Which of the following best describes how a catalyst works?

a)

lowers the pressure

b)

raises the temperature

c)

lowers the activation energy

d)

raises the activated complex

60.

Which of the following best describes the Collision Theory?

a)

reactants must collide, collide with proper orientation, and enough activation energy

b)

products must collide, collide with proper orientation, and enough activation energy

c)

the activated complex must collide, collide with proper orientation, and enough activation energy

d)

reactants and products together must collide, collide with proper orientation, and enough activation energy

61.

A reaction between which of the following would increase the rate of a reaction and make it occur the fastest? What variable is being manipulated?


10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C

10 g of aluminum strip and 0.5 M hydrochloric acid at 60°C

a)

10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C; concentration is being altered

b)

10 g of aluminum strip and 0.5 M hydrochloric acid at 60°C; concentration is being altered

c)

10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C; temperature is being altered

d)

10 g of aluminum strip and 0.5 M hydrochloric acid at 60°C; temperature is being altered

62.

A reaction between which of the following would increase the rate of a reaction and make it occur the fastest? What variable is being manipulated?


10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C

10 g of aluminum strip and 1 M hydrochloric acid at 20°C

a)

10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C; concentration is being altered

b)

10 g of aluminum strip and 1 M hydrochloric acid at 20°C; concentration is being altered

c)

10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C; temperature is being altered

d)

10 g of aluminum strip and 1 M hydrochloric acid at 20°C; temperature is being altered

63.

A reaction between which of the following would increase the rate of a reaction and make it occur the fastest? What variable is being manipulated?


10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C

10 g of granular aluminum and 0.5 M hydrochloric acid at 20°C

a)

10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C; concentration is being altered

b)

10 g of granular aluminum and 0.5 M hydrochloric acid at 20°C; concentration is being altered

c)

10 g of aluminum strip and 0.5 M hydrochloric acid at 20°C; surface area is being altered

d)

10 g of granular aluminum and 0.5 M hydrochloric acid at 20°C; surface area is being altered

64.

You have 1 M HCl reacting with 5 g of granular magnesium at room temperature. If you add water to the 1 M HCl, how will this alter the reaction rate?

a)

it will make the reaction faster because you are increasing the concentration

b)

it will make the reaction slower because you are increasing the concentration

c)

it will make the reaction faster because you are decreasing the concentration

d)

it will make the reaction slower because you are decreasing the concentration

65.

You have a solution of 0.1 M silver nitrate reacting with a 5 g chunk of salt at room temperature. If you crush/pulverize the salt chunk, how will this alter the reaction rate?

a)

it will make the reaction faster because you are increasing the surface area of the salt

b)

it will make the reaction slower because you are increasing the surface area of the salt

c)

it will make the reaction faster because you are decreasing the surface area of the salt

d)

it will make the reaction slower because you are decreasing the surface area of the salt

66.

You have a 0.2 M aqueous solution of copper (II) sulfate reacting with powdered iron at room temperature. If you put the solution of copper (II) sulfate in an ice water bath, how will this alter the reaction rate when combined with the iron?

a)

it will make the reaction faster because you are increasing the temperature of the solution

b)

it will make the reaction slower because you are increasing the temperature of the solution

c)

it will make the reaction faster because decreasing the temperature of the solution

d)

it will make the reaction slower because you are decreasing the temperature of the solution

67.

What is the minimum amount of energy needed for colliding particles to react?

a)

Chemical Energy

b)

Kinetic Energy

c)

Activation Energy

d)

Potential Energy

68.

A catalyst can be "recycled" and used again and again and again...

a)

False

b)

True

69.

The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is slower and why?

a)

Purple, because the activation energy is larger

b)

Green, because the activation energy is lower

c)

both reaction progress at the same rate

70.

How can you increase the surface area of a solid?

a)

crush/pulverize the solid into smaller pieces

b)

add a larger mass of the solid particles

c)

melt the solid into a liquid

d)

increase the temperature

71.

How does increasing concentration increase the rate of a reaction?

a)

fewer collisions occur among reactants

b)

more kinetic energy is provided to the reactants

c)

more collisions occur among reactants

d)

less kinetic energy is provided to the reactants

72.

Examine the model between the two reactants. Which variable is being changed and how does it alter the reaction rate?

a)

concentration is increasing and will increase the reaction rate (it goes faster)

b)

concentration is decreasing and will decrease the reaction rate (it goes slower)

c)

surface area is increasing and will increase the reaction rate (it goes faster)

d)

surface area is decreasing and will decrease the reaction rate (it goes slower)

73.

Examine the model between the two reactants which are red and blue. Which variable is being changed and how does it alter the reaction rate?

a)

concentration is increasing and will increase the reaction rate (it goes faster)

b)

concentration is decreasing and will decrease the reaction rate (it goes slower)

c)

surface area is increasing and will increase the reaction rate (it goes faster)

d)

surface area is decreasing and will decrease the reaction rate (it goes slower)

74.

Examine the model between the two reactants which are red and blue. Which variable is being changed and how does it alter the reaction rate?

a)

temperature is increasing and will increase the reaction rate (it goes faster)

b)

temperature is decreasing and will decrease the reaction rate (it goes slower)

c)

surface area is increasing and will increase the reaction rate (it goes faster)

d)

surface area is decreasing and will decrease the reaction rate (it goes slower)

e)

concentration is decreasing and will decrease the reaction rate (it goes slower)

75.
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
76.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
77.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
78.
Catalysts permit reactions to proceed along a ___________energy path.
a)
lower
b)
higher
79.
Smaller particle size allows for a _________ surface area to be exposed for the reaction.
a)
larger
b)
smaller
80.
Increasing the temperature will increase the kinetic energy of particles, therefore increasing the collisions between particles.
a)
false
b)
true
81.
Increasing the concentration of the reactants will slow down the reaction.
a)
false 
b)
true
82.
Exothermic reactions release heat to the surroundings.
a)
true
b)
false
83.

The ____________ states that atoms, ions, or molecules must collide in order to react.

a)

transition state

b)

activation energy

c)

rate law

d)

collision theory

84.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
85.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
86.
The ___________ the surface area of the reactants, the faster the reaction rate.
a)
larger 
b)
smaller
87.

_______ refers to how much solute is dissolved in

a solution.

a)

Surface Area

b)

Catalyst

c)

Temperature

d)

Concentration

88.
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.
89.
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 
a)
catalyst
b)
product
c)
reactant
d)
solute
90.
Smaller particle size allows for a _________ surface area to be exposed for the reaction.
a)
larger
b)
smaller
91.
Usually lowering the temperature will slow down a reaction.
a)
false
b)
true
92.
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.
93.

Which of the following increase the reaction rate?

a)

less surface area

b)

lower temperature

c)

increasing pressure

d)

increased concentration

94.
A catalyst works by
a)
changing the order of the reaction
b)
increasing the temperature
c)
lowering the activation energy
d)
making the activated complex
95.

What is collision theory?

a)

Molecules must collide in the correct orientation with enough energy to bond.

b)

Molecules need enough energy to collide and react.

c)

Atoms constantly collide and react.

d)

The minimum energy needed for atoms to react

96.

Which PE Diagram represents an endothermic reaction?

a)

A

b)

B

97.

Which PE Diagram represents an exothermic reaction?

a)

A

b)

B

98.

What is the rate of reaction?

a)

How much energy is needed for a reaction to occur.

b)

The energy required to break a bond.

c)

The time it takes for a reaction to occur.

d)

Collision Theory

99.

What is the purpose of a catalyst?

a)

Helps to slow down a reaction

b)

Raises the activation energy

c)

Lowers the activation energy

d)

Is consumed by the reaction

100.

What factors effect rate of reaction?

a)

Temperature, Concentration, Pressure and Energy

b)

Surface Area, Concentration, Energy and Pressure

c)

Temperature, Pressure, Concentration and Surface area

d)

Pressure, Surface area, Density and Energy

101.

Would the reaction rate speed up or slow down: A tablespoon of powdered sugar placed into HCL.

a)

Slow down

b)

Speed up

c)

Stays the same

102.

Increasing the temperature of your solution will.......

a)

Not affect the rate of reaction.

b)

Speed up the rate of reaction

c)

Slow down the rate of reaction

103.

Decreasing the concentration of a substance will usually........

a)

Slow down the reaction

b)

Speed up the reaction

c)

Have no affect on the reaction

104.

Which has more surface area?

a)

Large chunks of chalk

b)

Cube of sugar

c)

Powdered sugar

d)

Small chunks of sugar

105.

If you shrink the container size that your gas substance is in what will happen?

a)

The reaction rate will stay the same

b)

The reaction rate will speed up

c)

The reaction rate will slow down

106.
If the reactant particles collide with less than the activation energy, the particles will be rebound, and no reaction will occur.
a)
True
b)
False
107.
With the increase in temperature, the average kinetic energy of the molecules increases, leading to a decrease in number of collisions per unit time.
a)
True
b)
False
108.
The collisions which bring about a chemical reaction are called: 
a)
Consistent collisions
b)
 Normal collisions 
c)
Effective collisions 
d)
None of the above
109.
More collisions correspond to a: 
a)
Faster reaction rate  
b)
Slower reaction rate
c)
Constant reaction rate 
d)
None of the above
110.

What criteria must be met for reactant collisions to result in a successful product?

a)

The reactants must collide with each other

b)

The reactants must collide with enough energy and be in the right positions

c)

The reactants must have enough energy to form the activated complex

111.

What criteria must be met for reactant collisions to result in a successful product?

a)

The reactants must collide with each other

b)

The reactants must collide with enough energy and be in the right positions

c)

The reactants must have enough energy to form the activated complex

112.
If the reactant particles collide with less than the activation energy, the particles will be rebound, and no reaction will occur.
a)
True
b)
False
113.
With the increase in temperature, the average kinetic energy of the molecules increases, leading to a decrease in number of collisions per unit time.
a)
True
b)
False
114.
In a chemical reaction, collisions between the molecules provide the potential energy needed to break the bond.
a)
True
b)
False
115.
The collision theory qualitatively explains how chemical reactions occur and why reaction rates differ for different reactions
a)
True
b)
False
116.
The collisions which bring about a chemical reaction are called: 
a)
Consistent collisions
b)
 Normal collisions 
c)
Effective collisions 
d)
None of the above
117.
More collisions correspond to a: 
a)
Faster reaction rate  
b)
Slower reaction rate
c)
Constant reaction rate 
d)
None of the above
118.
Which of the following is/are the fundamental idea(s) of collision theory?
a)
Molecules react by colliding together
b)
The effective collisions must occur with certain minimum amounts of energy 
c)
In a large sample, the greater the number of effective collisions, and the faster the rate of reaction
d)
All of the above
119.
What two factors govern whether a collision between reacting particles will be effective?
a)
orientation and potential energy 
b)
kinetic energy and temperature 
c)
kinetic energy and orientation 
d)
potential energy and kinetic energy 
120.
Collisions may take place between: 
a)
Atoms
b)
Ions
c)
Molecules
d)
All of the above
121.
Under the collision theory, the particles must collide ____ and ____ for a reaction to occur.
a)
sufficient rate and sufficient energy
b)
sufficient surface area and correct orientation
c)
sufficient catalyst and sufficient energy
d)
sufficent energy and correct orientation
122.

A chemical change that occurs when two or more substances combine to form a

new substance.

a)

Activation Energy

b)

Chemical Kinetics

c)

Chemical Reaction

d)

Product

123.

The measure of the change in the concentration of the reactants or products.

a)

Activation Energy

b)

Activation Rate

c)

Chemical Reaction

d)

Concentration

124.

The substance or particles that enter into and are altered in the course of a chemical reaction.

a)

Catalyst

b)

Enzyme

c)

Product

d)

Reactant

125.

The number of particles present in a given volume of solution.

a)

Catalyst

b)

Concentration

c)

Product

d)

Temperature

126.

The measure of how fast or slow a reaction happens.

a)

Activation Energy

b)

Collision theory

c)

Particle Size

d)

Rate of Reaction

127.

A condition that needs to be met for a chemical reaction to occur.

a)

The substance must be homogeneous.

b)

The temperature should be kept constant.

c)

Particles should maintain a certain distance from each other.

d)

Particles in the substance must collide and have enough energy.

128.

The factor that would NOT affect the rate of a chemical reaction.

a)

Concentration

b)

Humidity

c)

Particle Size

d)

Temperature

129.

The factor that will slow down the rate of a chemical reaction.

a)

Manual stirring of the substance.

b)

Placing substance in a hot water.

c)

Placing products in iced water.

d)

Placing reactants in an ice bath.

130.

The factor that does NOT show evidence of chemical reaction.

a)

Absorption of heat

b)

Change of color

c)

Change of size

d)

Liberation of heat

131.

The measure of the hotness or coldness of a substance.

a)

Energy

b)

Humidity

c)

Temperature

d)

Thermometer

132.

The substance formed as a result of a chemical reaction.

a)

Product

b)

Reactant

c)

Resistance

d)

Substrate

133.

The measure of how much-exposed area a solid object has expressed in square units.

a)

Volume

b)

Surface

c)

Surface Area

d)

Concentration

134.

The substance that is dissolved in a solution.

a)

Solid

b)

Solute

c)

Solvent

d)

Substance

135.

The component of a solution that is present in the greatest amount.

a)

Sample

b)

Solute

c)

Solvent

d)

Substance

136.

A form of matter that has definite composition and distinct characteristics.

a)

Atoms

b)

Compound

c)

Mixture

d)

Substance

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