Chemistry Year 12 - Module 8 - Lesson 17
Nanomaterials & Their Properties
1. Key Ideas
Modern sunscreen can contain titanium dioxide nanoparticles that block ultraviolet radiation while remaining less visibly white on the skin. That usefulness comes from nanoscale behaviour, but it also raises a serious question: when a material becomes extremely small, do its benefits and risks both change?
- The definition of a nanomaterial
- Why nanomaterials differ from bulk materials through surface area and quantum effects
2. Success Criteria
By the end, you should be able to:
- The definition of a nanomaterial
- The named nanomaterials and applications in the course
- The meanings of top-down and bottom-up synthesis
3. Key Terms
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: "The definition of a nanomaterial". Use one specific example from the lesson.
2. Apply this idea to a new example: "The named nanomaterials and applications in the course". Show your reasoning clearly.
3. Analyse why this idea matters for understanding Nanomaterials & Their Properties: "The meanings of top-down and bottom-up synthesis".
6. Extend: Apply the Idea
A student gives a memorised answer about Nanomaterials & Their Properties 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 Nanomaterials & Their Properties?
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 Nanomaterials & Their Properties?
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.