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