🎯 Common Question Types:
- Define nanoparticle and give the size range (1-2 marks)
- Explain why nanoparticles are more reactive or better catalysts (2 marks)
- Describe an application of nanoparticles and why they are suitable (2-3 marks)
- Evaluate the benefits and risks of using nanoparticles (3-4 marks)
📝 Key Command Words:
- Explain: Reference "high surface area to volume ratio" for reactivity/catalyst questions
- Describe: Name the application and link the nanoparticle property to the function
- Evaluate: Give benefits (uses, effectiveness) AND risks (unknown health effects, potential toxicity)
- Define: 1-100 nm, high surface area to volume ratio, different properties from bulk material
⚠️ Common Mistakes to Avoid:
- Saying nanoparticles have the same properties as bulk material — they may have DIFFERENT properties
- Giving only benefits when asked to "evaluate" — always include health/safety risks
- Confusing nanoparticles with atoms or molecules — nanoparticles are collections of many atoms
- Forgetting the size range: 1-100 nm (not micrometres, not picometres)
- Saying fullerenes are giant covalent structures — they are discrete molecules (simple molecular)
This exam tips covers Exam Tips for Nanoparticles within Nanoparticles (HT) for GCSE Chemistry. Revise Nanoparticles (HT) in Bonding & Structure for GCSE Chemistry with 22 exam-style questions and 21 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 11 of 12 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Practice questions for Nanoparticles (HT)
What is the size range of nanoparticles?
Describe the structure of graphene and state one property that arises from this structure.
Quick recall flashcards
What are fullerenes?
Hollow carbon nanoparticles (like C₆₀) that can carry drug molecules
What is a nanometre in metres?
1 × 10⁻⁹ m (one billionth of a metre)