1) Picture of a diamond a) b) c) 2) Picture of a graphite a) b) c) 3) List of two examples of carbon a) Calcium and sodium b) Hydrogen and Helium c) Diamond and graphite 4) A diamond is a giant molecule of carbon atoms. a) Correct b) Not correct 5) Graphite is formed from carbon atoms in layers. a) Correct b) Not correct 6) Diamond is formed from carbon atoms in layers. a) Correct b) Not correct 7) Diamond is slippery. a) Correct b) Incorrect 8) Graphite is slippery. a) Correct b) Not correct 9) Diamond can be used to make jewellery. a) Yes b) No 10) Graphite is slippery because.... a) They are in layers, and forces between them is weak. b) They are clear (colourless).

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