Key term for Edexcel GCSE Chemistry, used in Bulk and Surface Properties of Matter.
Particulate matter with a diameter between 100 nm and 2,500 nm, larger than nanoparticles but smaller than coarse particles.
Fine particles (PM₂.₅) appears in Edexcel GCSE Chemistry revision content for Qualitative Analysis, Hydrocarbons and Polymers, especially Bulk and Surface Properties of Matter and Nanoparticle Size.
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