This memory aid covers Memory Aids 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 8 of 12 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
🧠 Memory Aids
NANO = billionth (10⁻⁹): "NANO sounds like 'no no' — as in, particles THIS small are SO tiny it's unbelievable." 1 nanometre is 0.000000001 metres.
Bigger surface = more reactive: Imagine grinding up chalk — powdery chalk dissolves much faster in acid than a lump, because more surface is exposed. Nanoparticles take this to an extreme.
Uses of nanoparticles (SCARE):
- Sunscreens — TiO₂ blocks UV invisibly
- Catalysts — high surface area, more efficient
- Antimicrobials — silver nanoparticles kill bacteria
- Remote drug delivery — fullerenes carry drugs to target cells
- Electronics — smaller, faster circuits
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.