physical properties of metals
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PHYSICAL PROPERTIES OF METALS
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METALS IN PERIODIC TABLE..
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METALS
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METALS HAVE MANY PHYSICAL PROPERTIES Malleability Ductility Hardness Metallic lustre Thermal conductors Electrical conductors Sonority
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MALLEABILITY Metals can be beaten into thin sheets
by hammering
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GOLD IS THE MOST MALLEABLE METAL…
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One gram of gold can be beaten into sheets with an area of about 6.7 sq.ft
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DUCTILITY Metals can be drawn into thin fine wires
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The filament of electric bulb made of fine wires of tungsten
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Platinum is the most ductile metal
Copper gold etc also used as thin wires..
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One gram of gold can be drawn into a wire of about 2km in length
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HARDNESS.. Hardness is another property of metals However there are quite a few metals
which are soft..SodiumLithiumGallium CesiumPottasium
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METTALLIC LUSTRE The surface of newly formed when
metals are cut ,has shining appearance
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THERMAL CONDUCTIVITY The ability to conduct heat is an
important property of metals
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Silver is the best thermal conductor among metals
Aluminium ,copper etc also possess comparatively high thermal conductivity
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ELECTRICAL CONDUCTIVITY The ability of metals to let electricity
pass through it
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SONORITY The ability of metals to produce sound
when tapped with a hard material
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METALS CAN BE USED FOR MAKING.. Electric wires Aluminium foils to wrap food materials Utensils Farming tools Bells used in places of worship etc
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