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124 Inspirational chemistry Nanotechnology size and scale Index 5.1 1 sheet Further activites on nanochemistry size and scale can be found in the RSC publication Contemporary chemistry for schools and colleges, London: Royal Society of Chemistry, 2004. Name Symbol Number in standard form 12 m Image Bigger than the diameter of the solar system, less than the distance to the closest star Terametre Tm 10 Gigametre Gm 109 m Mm 6 10 m Earth km 3 10 m Angel Falls, Venezuela – 980 metres Hectometre hm 2 10 m Football pitch Decametre dm 10 m Orca Metre m 1m Royal Python snake Megametre Kilometre Centimetre Millimetre cm mm –2 m Width of a fingernail 10 –3 m Mite –6 m Bacterium –9 m Buckyball – approximately 1 nm 10 Micrometre µm 10 Nanometre nm 10 Picometre pm The sun is 1.5 Gm across. –12 10 m Atom diameters range from 30–600 pm Nanotechnology – size and scale Look at the images below and decide which best represents the unit. One has been done for you as an example. Name Symbol Number in standard form Image Terametre Tm 1012 m Gigametre Gm 109 m Megametre Mm 106 m Kilometre km 103 m Hectometre hm 102 m Decametre dm 10 m Metre m 1m Centimetre cm 10–2 m Millimetre mm 10–3 m Micrometre ìm 10–6 m Nanometre nm 10–9 m Picometre pm 10–12 m Earth Orca (killer whale) Bacterium Insect mite Football pitch Diameter of the sun Distance to nearest star ? Too small for any image... Angel falls, Victoria Earth Bucky ball Width of a fingernail TO C P OP Y Nanotechnology size and scale – page 1 of 1, Index 5.1 PHO Royal python snake