What is an alloy?, A mixture of more than one metal, A pure metal made from only one type of atom, A compound formed when a metal chemically reacts with oxygen, A mixture of only non-metal elements, Which of these metals is not an alloy?, Iron, Steel, Brass, Bronze, Which metal is used to make steel more wear resistant?, Tungsten, Carbon, Aluminium, Copper, What is the missing word? The steel used for a saw blade is heated and cooled quickly to make the steel __________, harder, softer, lighter, weaker, What metal is extracted from its ore using carbon?, Iron, Aluminium, Magnesium, Gold, Which of these is not an advantage of recylcing metals?, Reduces pollution, Reduces mining, Increases cost, Reduces landfill waste, Calculate 15% of 8000, 1200, 1500, 800, 1000, Predict how many minutes the orbital period of satellite Y will be., 480, 45, 30, 10

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