Key Definitions
This definitions covers Key Definitions 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 5 of 12 in this topic. Make sure you can use the exact wording confidently, because definition marks are often lost through vague language.
Topic position
Section 5 of 12
Practice
22 questions
Recall
21 flashcards
📖 Key Definitions
Nanoparticle: A particle between 1 and 100 nanometres in size, which typically shows different properties from the same material in bulk form due to its very high surface area to volume ratio.
Nanometre (nm): A unit of length equal to 10⁻⁹ m (one billionth of a metre) — the scale at which nanoparticles exist.
Surface area to volume ratio: The ratio of a particle's surface area to its total volume — this increases dramatically as particle size decreases, making nanoparticles more reactive.
Fullerene: A molecular form of carbon in which carbon atoms form hollow cage or tube structures (e.g., C₆₀ buckminsterfullerene); used in drug delivery and as lubricants.
Nanotechnology: The design and application of materials and devices at the nanoscale (1-100 nm), exploiting the unique properties that emerge at this size scale.
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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.
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