Collision Theory

In a chemical reaction, collisions between the molecules provide the kinetic energy needed to break the bond? A. True

A. True B. False

With the increase in temperature, the average kinetic energy of the molecules increases, leading to a decrease in number of collisions per unit time. B. False

A. True B. False

Which PE Diagram represents an exothermic reaction? B. B

A. A B. B

Which one of these is an example of a collision A. A high five

A. A high five B. An apple sitting on the counter C. An ice cube in a glass of water. D. A car driving down the road.

List four factors that affect the rate of a reaction. A. Catalyst B. Surface Area C. concentration D. temperature

A. Catalyst B. Surface Area C. concentration D. temperature E. volume

What is the rate of reaction? C. The time it takes for a reaction to occur.

A. Collision Theory B. The energy required to break a bond C. The time it takes for a reaction to occur. D. How much energy is needed for a reaction to occur.

If the reactant particles collide with less than the activation energy, the particles will be rebound, and no reaction will occur. B. True

A. False B. True

What is the purpose of a catalyst? C. Lowers the activation energy.

A. Helps to slow down a reaction. B. Raises the activation energy. C. Lowers the activation energy. D. Is consumed by the reaction.

Collisions may take place between: D. All of the above

A. Ions. B. C. D. All of the above

Which of the following is/are the fundamental idea(s) of collision theory? D. All of the above.

A. Molecules react by colliding together. B. The effective collisions must occur with veratin minimun 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.

What is necessary for a chemical reaction to occur? Choose all that apply. A. Particle collisions with sufficient energy. D. Correct orientation of particles when they collide. E. Particle collisions.

A. Particle collisions with sufficient energy. B. A catalyst C. An increase or decrease in temperature. D. Correct orientation of particles when they collide. E. Particle collisions.

What two factors govern whether a collision between reacting particles will be effective? D. Kinetic energy and orientation.

A. Potential energy and kinetic energy. B. Kinetic energy and temperature C. orientation and potential energy D. Kinetic energy and orientation.

Under the collision theory, the particles must collide with ____ and ____ for a reaction to occur. A. Sufficient energy and correct orientation.

A. Sufficient energy and correct orientation. B. Sufficient rate and sufficient energy. C. Sufficient surface are and correct orientation. D. Sufficient catalyst and sufficient energy.

Complete the statement: Collision theory explains rate of chemical reaction by ___________________________. C. The frequency of particle collisions.

A. The amount of reactant available. B. measuring gas volumes. C. The frequency of particle collisions. D. The type reactants.

What criteria must be met for reactant collisions to result in a successful product? A. The reactants must collide with enough energy and be in the right positions.

A. The reactants must collide with enough energy and be in the right positions. B. The reactants must collide with each other. C. The reactants must have enough energy to form the activated complex.

The collisions which bring about a chemical reaction are called: B.Effective Collisions

A: B: Effective collisions C: Consistent collisions D:

When a collision occurs with sufficient energy and correct orientation, what is created as a transition step before the products are formed? D. Activated complex

A: Combined particles B: Combination Complex C: Activated reactants D. Activated complex

Every reaction requires a certain amount of energy in order to occur. What is this energy called in chemistry? C. Activation Energy

A: Manipulation energy B: Reaction Energy C: Activation Energy D: Successful Energy

What is collision theory? D. Molecules must collide in the correct orientation with enough energy to bond.

A: the minumun energy needed for atoms to react. B: Atoms constantly collide and react. C: Molecules need enough energy to collide and react. D. Molecules must collide in the correct orientation with enough energy to bond.

Which PE Diagram represents an endothermic reaction? A. A

B. B A. A