Question
Introduction: Pre-lab
Collision Theory
According to a model called Collision Theory, three conditions must be met before a chemical reaction can occur. The reactant particles must collide to react, they must collide with enough kinetic energy to react by forming an activation complex, and they must collide with the correct orientation. If two particles collide with insufficient energy or they collide with only glancing blow, they will move away from each other without reacting.
What factors affect reaction rates?
Concentration: the amount of substance that is dissolved in a given amount of another substance
Increasing the number of particles in a given volume will increase the reaction rate because there is a higher probability of collision.
Surface Area: the amount of area exposed to reactants
Increasing the surface area of the solid will increase the reaction rate.
Temperature: the measure of the average kinetic energy of particles in matter
Increasing the kinetic energy in a substance will increase the reaction rate because there is a higher probability of collision.
Catalysts: Lower the activation energy needed for the reaction and increase the reaction rate without being consumed by the reaction.
Question 1
According to collision theory, which of these is NOT required for particles to do to react?(1 point)
Responses
The particles must react with sufficient energy.
The particles must react with sufficient energy.
The particles must collide.
The particles must collide.
The particles must collide with the correct orientation.
The particles must collide with the correct orientation.
The particles must be in gas form.
The particles must be in gas form.
Question 2
How does decreasing the concentration of a substance affect its reaction rate?(1 point)
Responses
The reaction rate increases.
The reaction rate increases.
The reaction rate decreases.
The reaction rate decreases.
The reaction rate is unchanged.
The reaction rate is unchanged.
Question 3
How does decreasing the temperature of a substance affect the reaction rate?(1 point)
Responses
The reaction rate increases.
The reaction rate increases.
The reaction rate decreases.
The reaction rate decreases.
The reaction rate is unchanged.
The reaction rate is unchanged.
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Collision Theory
According to a model called Collision Theory, three conditions must be met before a chemical reaction can occur. The reactant particles must collide to react, they must collide with enough kinetic energy to react by forming an activation complex, and they must collide with the correct orientation. If two particles collide with insufficient energy or they collide with only glancing blow, they will move away from each other without reacting.
What factors affect reaction rates?
Concentration: the amount of substance that is dissolved in a given amount of another substance
Increasing the number of particles in a given volume will increase the reaction rate because there is a higher probability of collision.
Surface Area: the amount of area exposed to reactants
Increasing the surface area of the solid will increase the reaction rate.
Temperature: the measure of the average kinetic energy of particles in matter
Increasing the kinetic energy in a substance will increase the reaction rate because there is a higher probability of collision.
Catalysts: Lower the activation energy needed for the reaction and increase the reaction rate without being consumed by the reaction.
Question 1
According to collision theory, which of these is NOT required for particles to do to react?(1 point)
Responses
The particles must react with sufficient energy.
The particles must react with sufficient energy.
The particles must collide.
The particles must collide.
The particles must collide with the correct orientation.
The particles must collide with the correct orientation.
The particles must be in gas form.
The particles must be in gas form.
Question 2
How does decreasing the concentration of a substance affect its reaction rate?(1 point)
Responses
The reaction rate increases.
The reaction rate increases.
The reaction rate decreases.
The reaction rate decreases.
The reaction rate is unchanged.
The reaction rate is unchanged.
Question 3
How does decreasing the temperature of a substance affect the reaction rate?(1 point)
Responses
The reaction rate increases.
The reaction rate increases.
The reaction rate decreases.
The reaction rate decreases.
The reaction rate is unchanged.
The reaction rate is unchanged.
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Answers
GPT-4o mini
**Question 1**
According to collision theory, which of these is NOT required for particles to do to react?
**Response:** The particles must be in gas form.
**Question 2**
How does decreasing the concentration of a substance affect its reaction rate?
**Response:** The reaction rate decreases.
**Question 3**
How does decreasing the temperature of a substance affect the reaction rate?
**Response:** The reaction rate decreases.
According to collision theory, which of these is NOT required for particles to do to react?
**Response:** The particles must be in gas form.
**Question 2**
How does decreasing the concentration of a substance affect its reaction rate?
**Response:** The reaction rate decreases.
**Question 3**
How does decreasing the temperature of a substance affect the reaction rate?
**Response:** The reaction rate decreases.
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