SCIENTIST DIVIDE ALL SCIENTIST DIVIDE ALL ELEMENTS INTO THREE ELEMENTS INTO THREE

SECTIONSSECTIONS

METALSMETALSFOUND ON LEFT SIDE OF THE DARK FOUND ON LEFT SIDE OF THE DARK STAIRCASE LINE ON THE PERIODIC TABLESTAIRCASE LINE ON THE PERIODIC TABLESOLID AT ROOM TEMPERATURESOLID AT ROOM TEMPERATURE Except mercury Except mercury

HAVE A SILVER-GRAY COLORHAVE A SILVER-GRAY COLOR Except gold and copper Except gold and copper

GOOD CONDUCTORS OF HEAT AND GOOD CONDUCTORS OF HEAT AND ELECTRICITYELECTRICITYHAVE A METALLIC LUSTERHAVE A METALLIC LUSTERMALLEABLEMALLEABLE

NONMETALSNONMETALSFOUND ON THE RIGHT SIDE OF THE DARK FOUND ON THE RIGHT SIDE OF THE DARK STAIRCASE LINE ON THE PERIODIC TABLESTAIRCASE LINE ON THE PERIODIC TABLE

FOUND IN ALL STATES OF MATTERFOUND IN ALL STATES OF MATTER

COME IN MANY COLORSCOME IN MANY COLORS

POOR CONDUCTORS OF HEAT AND ELECTRICITY POOR CONDUCTORS OF HEAT AND ELECTRICITY (INSULATORS)(INSULATORS)

NO METALLIC LUSTERNO METALLIC LUSTER

NOT MALLEABLENOT MALLEABLE

SOME HAVE STRONG ODORSSOME HAVE STRONG ODORS

METALLOIDSMETALLOIDS

THESE ELEMENTS ARE FOUND THESE ELEMENTS ARE FOUND ALONGALONG THE DARK STAIRCASE LINE THE DARK STAIRCASE LINE ON THE PERIODIC TABLEON THE PERIODIC TABLE Except Aluminum (Al)Except Aluminum (Al)

HAVE PROPERITIES OF BOTH METALS HAVE PROPERITIES OF BOTH METALS AND NONMETALSAND NONMETALS

SOME ARE CALLED SEMI-SOME ARE CALLED SEMI-

CONDUCTORSCONDUCTORS

Metals, Metalloids, Nonmetals