1
2
3
4
5
100

THE SMALLEST PARTICLE THAT CAN BE CONSIDERED AN ELEMENT


ATOM

100

ENERGY OF AN ELECTRON-ORBIT



ENERGY LEVEL

100

CHEMICAL SYMBOL

EITHER 1 OR 2 LETTERS NAMING THE ELEMENTEITHER 1 OR 2 LETTERS NAMING THE ELEMENT

100

CAN BE HAMMERED OR ROLLED INTO FLAT SHEETS

MALLEABLE

100

DETEREORATION OF A METAL


CORROTION

200

A NEGATIVELY CHARGED PARTICLE


ELECTRON

200

ATOMIC NUMBER


THE NUMBER OF PROTONS IN THE NUCLEUS

200

PERIOD

ROWS CONTAINING SERIES OF DIFFERENT ELEMENTS

200

PULLED OUT INTO LONG WIRES

DUCTILE

200

ALKALAI METALS

THE MOST REACTIVE METALS

300

A POSITIVELY CHARGED PARTICLE


PROTON

300

MASS NUMBER

SUM OF PROTONS AND NEUTRONS

300

THE ELEMENTS IN A COLUMN


GROUP

METALS – METALLOIDS – NONMETALS

300

THERMAL CONDUCTIVITY

THE ABILITY TO TRANSFER HEAT

300

MELT AT HIGHER TEMPERATURES


ALKALAINE EARTH METALS

400

AN ATOMIC PARTICLE WITH NO ELECTRIC CHARGE


NEUTRON

400

SUM OF PROTONS AND NEUTRONS

ATOMIC MASS

400

GOOD CONDUCTORS OF HEAT AND ELECTRICITY-

METALS

400

ELECTRIC CONDUCTIVITY

THE ABILITY TO CARRY ELECTRIC CURRENT

400

THE METALS IN GROUPS 3 TO 12

TRANSITIONAL METALS

500

SMALL REGION IN THE CENTER OF THE ATOM


NUCLEUS

500

ARRANGEMENT OF ELEMENTS SHOWING THEIR PROPERTIES


PERIODIC TABLE

500

MATERIALS THAT ARE SHINY AND REFLECTIVE-

LUSTER

500

REACTS WITH OTHER SUBSTANCES


REACTIVITY

500

Atoms with complete outer shell

Inert or noble gases

M
e
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