powerpoint presentation. welcome lekshmi manmadhan. g candidate code - 18214375009 optional...

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