This definitions covers Key Definitions within Nanoparticles (HT) for GCSE Chemistry. Revise Nanoparticles (HT) in Bonding & Structure for GCSE Chemistry with 20 exam-style questions and 20 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. 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
20 questions
Recall
20 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.