Metals - Some facts
| Fact to remember | Name of the metal |
|---|---|
| 1st Metal used by man | Iron |
| Metal most abundant in earth’s crust | Aluminium |
| Metal which forms amalgam with other elements | Mercury |
| Metal used in a fuse wire and also in solder | Lead-tin alloy |
| Metal used in the filament of a bulb | Tungsten |
| Metal which pollutes the air of cities having large number of vehicles | Lead (reason for using unleaded petrol) |
| Metal used in the filaments of electric heaters | Nichrome |
| Metal used as radiation shield | Lead |
| Metal into which Uranium turns when it loses all its radioactivity | Lead |
| Metal used for making boats because it does not corrode by seawater | Titanium |
Important Alloys
| Alloy | Combination of |
|---|---|
| Duralumin | Aluminium and Copper |
| Brass | Copper and Zinc |
| Bronze | Copper and Tin |
| Invar | Iron and Nickel |
| Stainless steel | Iron, Chromium and Nickel |
| Gunmetal | Copper, Tin and Zinc |
| Solder | Lead and Tin |
| Electrum | Gold and Silver |
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Ores of Metals
| Metal | Ore |
|---|---|
| Aluminium | Bauxite |
| Beryllium | Beryl |
| Chromium | Chromite |
| Cobalt | Cobaltite |
| Copper | Bornite, Chalcocite |
| Gold | Quartz |
| Iron | Magnetite |
| Lead | Galena |
| Manganese | Pyrolusite |
| Mercury | Cinnabar |
| Nickel | Pentlandite |
| Tin | Casseterite |
| Tungsten | Wolframite, Scheelite |
| Silver | Argentite |
| Uranium | Uraninite |
| Zinc | Sphalerite |
