Metals, Nonmetals and Metalloids

Group 2 II-2

Campanilla

Cinco 

Concepcion

Cruz, Jayrene

Cruz, Gabrielli


METALS

-forms cations and ionic bonds with non-metals

-in a metal, atoms readily lose electrons to form positive ions 

METALS IN THE PERIODIC TABLE

Alkali Metals-Group IA

Alkaline Earth Metals-Group IIA

Early Transition Metals-Group IIIB-VIIB

Late Transition Metals-Group VIIB,IB,IIB

Alloys: Metals are easily combined. Mixtures of many elements are called alloys. 

The Arrangement of the Atoms:huge structures of atoms held together by metallic bonds.

PHYSICAL PROPERTIES:

-Solid at room temperature(except Mercury)

-Lustrous

-Good conductor of heat and electricity

-Malleable(can be beaten into sheets) 

-Ductile (can be pulled out into wires)

CHEMICAL PROPERTIES

- Metals usually make positive ions when the compounds are dissolved in solution. 

-Their metallic oxides make hydroxides (bases) (OH-) and not acids when in solution.

  

NONMETALS 

-the elements that lack the properties of metals 

NON-METALS IN THE PERIODIC TABLE:

Boron Group- Group IIIA

Carbon Group-Group IVA

Nitrogen Group-Group VA

Chalcogens-Group VIA

Halogens-Group VIIA

PHYSICAL PROPERTIES

-poor conductors of heat and electricity 

-dull and brittle

-no metallic luster

-usually have lower densities than metals
-they have significantly lower melting points and boiling points than metals

CHEMICAL PROPERTIES:
-have high electronegativity

-they form acidic oxides

METALLOIDS

-have properties of both metals and non-metals. 
-Metalloids are the elements found along the stair-step line that distinguishes metals from non-metals. This line is drawn from between Boron and Aluminum to the border between Polonium and Astatine. The only exception to this is Aluminum, which is classified under "Other metals"