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Metals & Non-Metals
Revision of Metals And Non-Metals chapter
Question | Answer |
---|---|
What is an alloy? | A mixture of two or more metals. |
Name some alloys. | Brass, Bronze, Solder, Stainless Steel |
Give a use of Brass. | Musical Instruments |
Give a use of Bronze. | Statues or Olympic Medals |
Give a use of Stainless Steel. | Cutlery |
Name the two conditions necessary for rusting to occur. | Oxygen and Water |
What is Corrosion? | An undesirable process whereby a metal is converted into one of its compounds. |
List some methods of preventing corrosion. | Painting, Galvanising, Greasing, Chromium Plating |
Put the following metals in order of reactivity (most to least): Copper, Calcium, Mercury, Sodium | Sodium, Calcium, Copper, Mercury |
Put the following metals in order of reactivity (least to most): Zinc, Potassium, Silver, Aluminium | Silver, Zinc, Aluminium, Potassium |
Name the gas produced when a metal reacts with an acid. | Hydrogen |
Name the second substance produced when a metal reacts with an acid (other than the gas). | A Salt |
What word is used to describe when a metal can be hammered into shape easily? | Malleable |
What word is used to describe when a metal can be drawn into wires easily? | Ductile |