Key term for OCR GCSE Chemistry B, used in Nanoparticles.
Particles with a diameter between 100 nm and 2,500 nm, commonly referred to as PM2.5.
Fine particles appears in OCR GCSE Chemistry B revision content for Material choices, especially Nanoparticles and Ratios and relative sizes.
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Material choices
Nanoparticles • Scale and definition of nanotechnology
