1) Material that allows electricity to flow a) GOLD AND SILVER b) GLASS c) OIL 2) Material that does not allow electricity to flow through it easily. a) SEA WATER b) A KEY c) RUBBER 3) It is a measure of how a substance reflects light. a) A BLACK BOX b) WOOD c) GEMSTONE 4) It breaks or cracks easily when it is bent or stretched. a) A nail b) A gold ring c) A nokia mobile phone 5) it can be stretched. a) Speed b) Tensile strength c) A rock

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