Which object is the odd one out?, magnet, paper clip, plastic spoon, drawing pin, Which of these is not a gas?, oxygen, water vapour, carbon dioxide, condensation, Which of these changes is not reversible?, dissolving salt in water, frying an egg, turning water into ice, boiling water to turn it into steam, Which of these materials does not conduct electricity?, copper wire, a pencil lead (graphite), a magnet, a plastic drinking straw, Which of these materials dissolves in water?, sand, tea leaves, sugar, cooking oil, I've dropped a bag of small plastic beads into a box full of sand. How can I seperate them in less than a minute?, use a pair of tweezers and pick the beads out one at a time, use a sieve, use a magnet to pick out the beads, dissolve the sand in water leaving the beads behind, Which of the following is the hardest material on earth?, diamond, kevlar, titanium, gold, Put the following in order of their cost:, 1, 2, 3,4,, 2, 1, 3, 4, 1, 3, 2, 4, 2, 3, 1, 4, What are plastics (polymers) made from?, volcanic rocks, sand, crude oil, If you made a rod out of all these materials which one will be most flexible without permanently bending or breaking?, glass fibre reinforced composites, steel alloy, aluminum alloy, glass
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Materials and their Properties
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