Lesson C3.11 Nanoparticles MS: 1b, 1d, 2h, 5c AQA spec link: Aiming for Grade 4 LOs: 2.4.1 Nanoscience refers to structures that State a definition of nanoscience. Starters are 1–100 nm in size, of the order of a few Describe how surface area to volume hundred atoms. ratio increases as particle size numbers Nanoparticles, are smaller than fine particles decreases. into (PM2.5), which have diameters between 100 Recognise that the negative indices in 0.000 • and 2500 nm (1 × 10–7 m and standard form used in nanoscience 0.000 • 2.5 × 10–6 m). represent very small numbers. 0.000 • Coarse particles (PM10) have diameters Aiming for Grade 6 LOs: Surface between 1 × 10–5 m and 2.5 × 10–6 m. Coarse and Describe the size of nanoparticles. particles are often referred to as dust. a nail in Explain why surface area to volume rather As the side of a cube decreases by a factor of increases as particle size wooden 10 the surface area to volume ratio increases by decreases. splint a factor of ten. Convert lengths into standard form. of iron
Lesson C3.11 Nanoparticles MS: 1b, 1d, 2h, 5c AQA spec link: 2.4.1 Nanoscience refers to structures that are 1–100 nm in size, of the order of a few hundred atoms. Nanoparticles, are smaller than fine particles (PM2.5), which have diameters between 100 and 2500 nm (1 × 10–7 m and 2.5 × 10–6 m). Coarse particles (PM10) have diameters between 1 × 10–5 m and 2.5 × 10–6 m. Coarse particles are often referred to as dust. As the side of a cube decreases by a factor of 10 the surface area to volume ratio increases by a factor of ten. Aiming for Grade 4 LOs: State a definition of nanoscience. Describe how surface area to volume ratio increases as particle size decreases. Recognise that the negative indices in standard form used in nanoscience represent very small numbers. Starters numbers into • 0.000 • 0.000 • 0.000 Surface and a nail in rather wooden splint of iron Aiming for Grade 6 LOs: Describe the size of nanoparticles. Explain why surface area to volume increases as particle size decreases. Convert lengths into standard form.
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