ppt

2. POWERPOINT PRESENTATION

3. KEERTHY.B.S
REG. NO - 182 14 341 008
OPTIONAL SUBJECT- PHYSICAL SCIENCE

4. METALS AND THEIR CHARACTERISTICS
TOPIC
METALS AND THEIR
CHARACTERISTICS

5. METALS ARE HARD AND SHINY IN APPEARANCE

6.  MALLEABILITY
 DUCTILITY
 HARDNESS
 METALLIC LUSTURE
 CONDUCTIVITY
 SONORITY

7. METALS CAN BE BEATEN INTO THIN SHEETS BY
HAMMERING.THIS PROPERTY IS KNOWN AS
MALLEABILITY.

8. METALS CAN BE DRAWN INTO THIN WIRES.THIS
PROPERTY IS KNOWN AS DUCTILTY.

9. FRESHLY CUT SURFACES OF
METALS HAVE A SHINY
APPEARANCE.THIS PROPERTY IS
KNOWN AS METALLIC LUSTURE.

10. METALS ARE THERMAL CONDUCTORS.
SILVER IS THE BEST THERMAL CONDUCTOR.

11. ALL METALS ARE CONDUCTORS OF ELECTRICITY.
SILVER IS BEST ELECTRICAL CONDUCTOR.

12. THE ABILITY OF METALS TO PRODUCE SOUND
WHEN TAPPED WITH A HARD MATERIAL IS
KNOWN AS SONORITY.

13. HIGH THERMAL CONDUCTIVITY
HIGH DENSITY
HIGH MELTING POINT
HIGH ELECTRICAL CONDUCTIVITY

14.  TO MAKE ELECTRIC WIRES
 TO MAKE ALUMINIUM FOILS TO WRAP FOOD
MATERIALS
 TO MAKE UTENSILS
 TO MAKE FARMING TOOLS
 TO MAKE BELLS USED IN PLACES OF WORSHIP