Chemistry Year 11 - Module 3 - Lesson 11

Collision Theory & Reaction Rate

Use this worksheet after reading the lesson to practise the key ideas and prove you can meet the success criteria.

Name

Date

Class

1. Key Ideas

A glow stick glows brighter when you warm it in your hands and slower when you put it in the freezer — the same chemical reaction, running at different rates, because temperature changes how often and how hard particles collide.

Key facts and terms for Collision Theory & Reaction Rate
How the main ideas in Collision Theory & Reaction Rate connect

2. Success Criteria

By the end, you should be able to:

Key facts and terms for Collision Theory & Reaction Rate
Where this lesson fits in Module 3
How the main ideas in Collision Theory & Reaction Rate connect

3. Key Terms

Collision theoryThe theory that chemical reactions occur when particles collide with sufficient energy and correct orientation.

effective collisionAn effective collision is one that results in the formation of products.

Sufficient energyCollision frequency is how often particles collide; collision effectiveness is whether those collisions have sufficient energy AND correct orientation.

Synthesis reactionA reaction where two or more reactants combine to form a single product.

Decomposition reactionA reaction where a single compound breaks down into simpler substances.

Precipitation reactionA reaction in which an insoluble solid forms when two solutions are mixed.

4. Activity: Build the Lesson Map

Use the lesson to complete the table. Keep answers brief but specific.

Prompt	Your answer
Main concept
Important example
Common mistake to avoid
How this links to the next lesson

5. Short Answer Questions

1. Explain this lesson goal in your own words: "Key facts and terms for Collision Theory & Reaction Rate". Use one specific example from the lesson.

Band 32 marks

2. Apply this idea to a new example: "Where this lesson fits in Module 3". Show your reasoning clearly.

Band 43 marks

3. Analyse why this idea matters for understanding Collision Theory & Reaction Rate: "How the main ideas in Collision Theory & Reaction Rate connect".

Band 54 marks

6. Extend: Apply the Idea

Band 5/65 marks

A student gives a memorised answer about Collision Theory & Reaction Rate but does not use evidence or reasoning.

Improve the answer by writing a stronger response that uses accurate terminology, a relevant example and a clear explanation.

7. Multiple Choice

1. What is the best first step when answering a question about Collision Theory & Reaction Rate?

A. Identify the key concept being tested

B. Write every fact from memory

C. Ignore the command word

D. Skip examples and evidence

2. Which answer would show stronger understanding of Collision Theory & Reaction Rate?

A. An answer with accurate terms and reasoning

B. A copied definition only

C. A single-word response

D. An answer with no example

3. What should you do if a question asks you to explain?

A. Link the idea to a reason or cause

B. List unrelated facts

C. Only draw a diagram

D. Write the shortest possible answer

8. Success Criteria Proof

Finish with evidence that you can do each success criterion.

Success criterion 1

Prove that you can: Key facts and terms for Collision Theory & Reaction Rate