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POWERPOINT PRESENTATION
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WELCOME
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LEKSHMI MANMADHAN. G
CANDIDATE CODE - 18214375009
OPTIONAL SUBJECT- PHYSICAL
SCIENCE
SUBMITTED BY
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METALS AND THEIR CHARACTERISTICS
TOPIC METALS
&
THEIR CHARACTERISTICS
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METALS
METALS ARE HARD AND SHINY IN APPEARANCE
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MALLEABILITYDUCTILITYHARDNESSMETALLIC LUSTURECONDUCTIVITYSONORITY
CHARACTERISTICS OF METALS
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METALS CAN BE BEATEN INTO THIN SHEETS BY HAMMERING.THIS
PROPERTY IS KNOWN AS MALLEABILITY.
MALLEABILITY
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METALS CAN BE DRAWN INTO THIN WIRES.THIS PROPERTY IS KNOWN AS
DUCTILTY.
DUCTILITY
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FRESHLY CUT SURFACES OF METALS HAVE A SHINY
APPEARANCE.THIS PROPERTY IS KNOWN AS METALLIC
LUSTURE.
METALLIC LUSTURE
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METALS ARE THERMAL CONDUCTORS.SILVER IS THE BEST THERMAL
CONDUCTOR.
THERMAL CONDUCTIVITY
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ALL METALS ARE CONDUCTORS OF ELECTRICITY.
SILVER IS BEST ELECTRICAL CONDUCTOR.
ELECTRICAL CONDUCTIVITY
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THE ABILITY OF METALS TO PRODUCE SOUND WHEN TAPPED WITH A HARD MATERIAL IS KNOWN AS SONORITY.
SONORITY
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HIGH THERMAL CONDUCTIVITYHIGH DENSITY
HIGH MELTING POINTHIGH ELECTRICAL CONDUCTIVITY
OTHER CHARACTERISTICS
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TO MAKE ELECTRIC WIRESTO MAKE ALUMINIUM FOILS TO WRAP
FOOD MATERIALSTO MAKE UTENSILSTO MAKE FARMING TOOLSTO MAKE BELLS USED IN PLACES OF
WORSHIP
USES OF METALS
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THANK YOU