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10/09/2020 7:05 pm
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Classify the following as amorphous or crystalline solids: Polyurethane, naphthalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.
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10/09/2020 7:06 pm
Crystalline solids: Naphthalene, potassium nitrate, benzoic acid, and copper.
Amorphous solids: Polyurethane, cellophane, Teflon, fibreglass and polyvinyl chloride.