Collision theory

In this lesson, students will look at the 5 factors that affect rate of reaction. Students will also learn what collision theory is and what is activation energy. At the end of the lesson, students are expected to be able to explain how reactions occur using collision theory.

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Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which of the following are signs that a chemical reaction has taken place? Tick THREE boxes.

Select three (3) boxes

Bubbling Goes cloudy Melting Temperature change Condensing

1/6

Q2.How can we calculate the rate of reaction from a line graph?

Time taken for reaction to complete - time when reaction starts Gradient of the line Final volume of gas - initial volume of gas Final mass of product - initial mass of reactant

2/6

Q3.Copper reacts with Hydrochloric Acid to form Copper Chloride and Hydrogen gas. What are the products formed? Tick TWO boxes.

Select two (2) boxes

Copper Copper Chloride Hydrochloric Acid Hydrogen

3/6

Q4.In a graph where time is on the x-axis and volume of gas collected is on the y-axis, the slope of the curve is constantly changing because...

The rate of reaction is increasing proportionally The rate of reaction stays the same The rate of reaction is constantly changing The rate of reaction is constant

4/6

Q5.Higher tier only: In order to determine the rate of reaction at a specific point, we must draw a _________________ on the curve at that point.

Data point Tangent line Horizontal line Vertical line

5/6

Q6.Calculate the rate of reaction when the initial mass of reactants is 43 g and the final mass of products is 38.9 g after 30 seconds.

0.137 g/s 1.297 g/s 1.43 g/s 2.73 g/s

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Which of the following are signs that a chemical reaction has taken place? Tick THREE boxes.

Select three (3) boxes

Bubbling Goes cloudy Melting Temperature change Condensing

1/6

Q2.How can we calculate the rate of reaction from a line graph?

Time taken for reaction to complete - time when reaction starts Gradient of the line Final volume of gas - initial volume of gas Final mass of product - initial mass of reactant

2/6

Q3.Copper reacts with Hydrochloric Acid to form Copper Chloride and Hydrogen gas. What are the products formed? Tick TWO boxes.

Select two (2) boxes

Copper Copper Chloride Hydrochloric Acid Hydrogen

3/6

Q4.In a graph where time is on the x-axis and volume of gas collected is on the y-axis, the slope of the curve is constantly changing because...

The rate of reaction is increasing proportionally The rate of reaction stays the same The rate of reaction is constantly changing The rate of reaction is constant

4/6

Q5.Higher tier only: In order to determine the rate of reaction at a specific point, we must draw a _________________ on the curve at that point.

Data point Tangent line Horizontal line Vertical line

5/6

Q6.Calculate the rate of reaction when the initial mass of reactants is 43 g and the final mass of products is 38.9 g after 30 seconds.

0.137 g/s 1.297 g/s 1.43 g/s 2.73 g/s

6/6

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Worksheet

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Collision Theory

Please complete this exit quiz. This quiz will test your understanding of Collision Theory, as well as topics covered in previous topics.

Q1.Which of the following is the definition for rate of reaction?

A measure of time A measure of quantity of reactant used up A measure of how quickly a reactant is used up A measure of quantity of product formed

1/6

Q2.What is 'activation energy'?

The minimum energy released from a reaction The minimum energy taken in from the surroundings The total energy in a reaction The minimum energy required for a reaction to take place

2/6

Q3.Which of the following factors affect rate of reaction?

Select four (4) boxes

Colour Temperature Presence of catalysts Concentration of reactants in a solution Mass of product Surface area of solid reactants

3/6

Q4.For a given mass of solid, powders or smaller lumps have ______________________________ than larger lumps which increases the rate of reaction when used as reacting particles collide more frequently.

Smaller surface area to volume ratio Larger surface area to volume ratio Smaller mass to volume ratio Larger mass to volume ratio

4/6

Q5.The higher the pressure of reacting gases, the rate of reaction...

Increases Decreases Stays the same

5/6

Q6.A student investigated the rate of reaction between copper and hydrochloric acid. The student collected 7.5 cm³ of gas produced after 15 seconds. Calculate the mean rate of reaction.

0.5 cm³/s 2 cm³/s 22.5 cm³/s 112.5 cm³/s

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Collision Theory

Please complete this exit quiz. This quiz will test your understanding of Collision Theory, as well as topics covered in previous topics.

Q1.Which of the following is the definition for rate of reaction?

A measure of time A measure of quantity of reactant used up A measure of how quickly a reactant is used up A measure of quantity of product formed

1/6

Q2.What is 'activation energy'?

The minimum energy released from a reaction The minimum energy taken in from the surroundings The total energy in a reaction The minimum energy required for a reaction to take place

2/6

Q3.Which of the following factors affect rate of reaction?

Select four (4) boxes

Colour Temperature Presence of catalysts Concentration of reactants in a solution Mass of product Surface area of solid reactants

3/6

Smaller surface area to volume ratio Larger surface area to volume ratio Smaller mass to volume ratio Larger mass to volume ratio

4/6

Q5.The higher the pressure of reacting gases, the rate of reaction...

Increases Decreases Stays the same

5/6

Q6.A student investigated the rate of reaction between copper and hydrochloric acid. The student collected 7.5 cm³ of gas produced after 15 seconds. Calculate the mean rate of reaction.

0.5 cm³/s 2 cm³/s 22.5 cm³/s 112.5 cm³/s

6/6

Lesson summary: Collision theory

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The next lesson in:
The rate and extent of chemical change (FT)
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Planning an investigation to find rate of reaction

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Collision theory

Intro quiz - Recap from previous lesson

Intro quiz - Recap from previous lesson

Video

Worksheet

Collision Theory

Collision Theory

Lesson summary: Collision theory

It looks like you have not completed one of the quizzes.

Time to move!

The next lesson in: The rate and extent of chemical change (FT) is: Planning an investigation to find rate of reaction

Browse Oak's lessons:

The next lesson in:
The rate and extent of chemical change (FT)
is:
Planning an investigation to find rate of reaction