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Metals and non-metal
Question | Answer |
---|---|
Name 3 physical properties of metals? | Hard High density Conduct heat and electricity sonorous shiny malleable ductile high melting points |
*What does malleable mean | Can be hammered into different shapes |
*Give an example of a metal that can be hammered into different shapes. | Aluminium |
*What does ductile mean? | pulled into thin wires |
*Give an example of a wire that can be pulled into different shapes | copper |
Name 2 metals that do not act like metals. | The alkali metals mercury |
Name 3 physical properties of non-metals. | Usually liquids and gases poor heat and electrical conductors brittle (break easy) |
Name a non-metal that act differently and say why | carbon- graphite is a good conductor of electricity diamond is a tough substance |
What are alloys | a mixture of metals |
Name 3 alloys and give their uses | Bronze-medals Brass- instruments stainless steel- cutlery solder-soldering |
what is bronze made from | copper and tin |
what is brass made from | copper and zinc |
what is stainless steel made from | iron, chromium and nicklel |
What is rusting? | corrosion of iron |
what is another name for rust? | Iron oxide |
what colour is rust? | orange/brown |
Put the following metals in order of reactivity in water? Zinc, Magnesium, Copper and Calcium | Calcium, Magnesium, Zinc and Copper |
Put the following metals in order of reactivity in acid Zinc, Calcium, Copper and Magnesium | Calcium, Magnesium, Zinc and Copper |
Name 3 ways to prevent rusting? | Galvanising, painting, oiling, putting plastic on it |