The Periodic Table of Elements

Elements  Science has come along way since four element theory of Air, Water, Fire, and Earth.  Scientists have identified 92 Natural elements, and created about 28 others.

Elements The elements, alone or in combinations, make up our bodies, our world, our sun, and in fact, the entire universe.

Periodic Table  A great deal of information about an element can be gathered from its position on the periodic table.  Understanding the organization and plan of the periodic table will help you obtain basic information about each of the 118 known elements.

Periodic Table

Metals

Properties of Metals Metals appear to the left of the dark ziz-zag line on the periodic table. Metals are solid at room temperature, except for mercury..

Properties of Metals Metals have luster. This means they are shiny

Ductile metals can be drawn into wire.

Properties of Metals Malleable metals can be h ammered into sheets

Metals have a high melting point. They are also very dense (Heavy for their size).

Properties of Metals Conductors Metals are good conductors of electricity and heat (heat and electricity move through them easily)

Properties of Metals A chemical property of metal is its reaction with water and oxygen. This results in corrosion and rust.

Nonmetals

Properties of Nonmetals Nonmetals occur to the right of the dark zig-zag on the periodic table. Although Hydrogen is in family 1, it is also a nonmetal. Many nonmetals are gases at room temperature.

Properties of Nonmetals Nonmetals do not have luster; they are dull.

Properties of Nonmetals Brittle Nonmetals are brittle so they break easily. This means nonmetals ARE NOT ductile or malleable.

Nonmetals have low density.

Properties of Nonmetals They also have a low melting point. They are poor conductors of heat and electricity(heat and electricity do not move through easily)..

Metalloids

Properties of Metalloids Metalloids can be found clustered around the dark zig-zag line that separates metals and nonmetals.

Properties of Metalloids Metalloids (metal- like) have properties of both metals and nonmetals.

Properties of Metalloids Metalloids are solids that can be shiny or dull.

Properties of Metalloids They conduct electricity and heat better than nonmetals but not as well as metals.

Properties of Metalloids Metalloids are malleable and ductile

Let’s Classify! ________ Silver______ Iron ________ Oxygen ______ Calcium _________ Carbon______ Sulfur _________ Aluminum _______ Sodium _________ Copper_________Silicon

Increasing nonmetallic character(Except 8A) Increasing nonmetallic character