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18.1.2 P Collision Theory

Total questions: 72

Worksheet time: 49mins

Name
Class
Date
1.

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

2.

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

3.
The collisions which bring about a chemical reaction are called: 
a)
Consistent collisions
b)
 Normal collisions 
c)
Effective collisions 
d)
None of the above
4.
More collisions correspond to a: 
a)
Faster reaction rate  
b)
Slower reaction rate
c)
Constant reaction rate 
d)
None of the above
5.
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
6.
Increase in temperature of the reactants can do one of the following
a)
Slow collision frequency
b)
Allow less effective collision between the particles
c)
Neutralise the reaction
d)
increase collision between the particles thus increasing the rate.
7.
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
8.

When surface area is decreased the rate of reaction...

a)

Decreases, because there are LESS possible sites for correct collisions

b)

Increases, because there are LESS possible sites for correct collisions

c)

Decreases, because there are MORE possible sites for correct collisions

d)

Increases, because there are MORE possible sites for correct collisions

9.
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
10.
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
11.
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
12.
In a chemical reaction, collisions between the molecules provide the potential energy needed to break the bond.
a)
True
b)
False
13.
The collision theory qualitatively explains how chemical reactions occur and why reaction rates differ for different reactions
a)
True
b)
False
14.
More collisions correspond to a: 
a)
Faster reaction rate  
b)
Slower reaction rate
c)
Constant reaction rate 
d)
None of the above
15.
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
16.
Collisions may take place between: 
a)
Atoms
b)
Ions
c)
Molecules
d)
All of the above
17.
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
18.

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

19.

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

a)

Activation Energy

b)

Activation Rate

c)

Chemical Reaction

d)

Concentration

20.

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

21.

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

a)

Catalyst

b)

Concentration

c)

Product

d)

Temperature

22.

The measure of how fast or slow a reaction happens.

a)

Activation Energy

b)

Collision theory

c)

Particle Size

d)

Rate of Reaction

23.

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.

24.

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

a)

Concentration

b)

Humidity

c)

Particle Size

d)

Temperature

25.

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.

26.

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

27.

The measure of the hotness or coldness of a substance.

a)

Energy

b)

Humidity

c)

Temperature

d)

Thermometer

28.

The substance formed as a result of a chemical reaction.

a)

Product

b)

Reactant

c)

Resistance

d)

Substrate

29.

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

a)

Volume

b)

Surface

c)

Surface Area

d)

Concentration

30.

The substance that is dissolved in a solution.

a)

Solid

b)

Solute

c)

Solvent

d)

Substance

31.

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

a)

Sample

b)

Solute

c)

Solvent

d)

Substance

32.

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

a)

Atoms

b)

Compound

c)

Mixture

d)

Substance

33.

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

34.
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
35.
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
36.
The collisions which bring about a chemical reaction are called: 
a)
Consistent collisions
b)
 Normal collisions 
c)
Effective collisions 
d)
None of the above
37.

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

38.
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
39.
In a chemical reaction, collisions between the molecules provide the potential energy needed to break the bond.
a)
True
b)
False
40.
More collisions correspond to a: 
a)
Faster reaction rate  
b)
Slower reaction rate
c)
Constant reaction rate 
d)
None of the above
41.
Collisions may take place between: 
a)
Atoms
b)
Ions
c)
Molecules
d)
All of the above
42.
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
43.

Which one of these is an example of a collision

a)

an apple sitting on the counter

b)

a car driving down the road

c)

a high five

d)

an ice cube in a glass of water

44.

Complete the statement: Collision theory explains rate of chemical reaction by ___________________________.

a)

the amount of reactant available

b)

the frequency of particle collisions

c)

measuring gas volumes

d)

the type of reactants

45.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

46.

What is necessary for a chemical reaction to occur?

a)

Correct orientation of particles when they collide

b)

particle collisions

c)

an increase or decrease in temperature

d)

particle collisions with sufficient energy

e)

a catalyst

47.

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

48.

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

49.
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
50.
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
51.
The collisions which bring about a chemical reaction are called: 
a)
Consistent collisions
b)
 Normal collisions 
c)
Effective collisions 
d)
None of the above
52.

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

53.
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
54.
In a chemical reaction, collisions between the molecules provide the potential energy needed to break the bond.
a)
True
b)
False
55.
More collisions correspond to a: 
a)
Faster reaction rate  
b)
Slower reaction rate
c)
Constant reaction rate 
d)
None of the above
56.
Collisions may take place between: 
a)
Atoms
b)
Ions
c)
Molecules
d)
All of the above
57.
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
58.

Which one of these is an example of a collision

a)

an apple sitting on the counter

b)

a car driving down the road

c)

a high five

d)

an ice cube in a glass of water

59.

Complete the statement: Collision theory explains rate of chemical reaction by ___________________________.

a)

the amount of reactant available

b)

the frequency of particle collisions

c)

measuring gas volumes

d)

the type of reactants

60.

List four factors that affects the rate of a reaction

a)

temperature

b)

concentration

c)

surface area

d)

volume

e)

catalysts

61.

What is necessary for a chemical reaction to occur?

a)

Correct orientation of particles when they collide

b)

particle collisions

c)

an increase or decrease in temperature

d)

particle collisions with sufficient energy

e)

a catalyst

62.

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

63.

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

64.

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

65.

What is the purpose of a catalyst?

a)

Helps to slow down a reaction

b)

Replaces the products

c)

Helps to speed up a reaction

d)

Replaces the reactants

66.

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

67.

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

68.

Which has more surface area?

a)

Large chunks of chalk

b)

Cube of sugar

c)

Powdered sugar

d)

Small chunks of sugar

69.

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

70.
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
71.
More collisions correspond to a: 
a)
Faster reaction rate  
b)
Slower reaction rate
c)
Constant reaction rate 
d)
None of the above
72.

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

a)

The reactants must lightly collide with enough energy in the correct orientation.

b)

The reactant particles must collide perpendicular to each other with high kinetic energy.

c)

The reactants must have low kinetic energy and in the correct orientation.

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