States of matter; solids

Metals vs. nonmetals

Which elements are metals?

Metals are on the left side of the periodic table

Properties of METALS

Solids at room temp. except MercuryShiny “metallic” High DensityMalleable DuctileConductor of electricityConductor of heat

Periodic Table

All the elements shaded in yellow have those metallic properties.

Some common uses of metals are

in sprinkler-systems. (Bismuth)in road flares; the red color. (Strontium)in medicine; absorbs harmful x-rays & gamma rays (Barium)

Periodic Table

The elements in Group 1 are the absolute best of all metals! They are called ALKALI METALS

Which elements are NONMETALS?

Nonmetals are on the right side of the periodic table

Properties of NONMETALSMostly gases at room

temp. Dull; not shinyLow DensityBrittle; not malleableNon- conductors

Periodic Table

All the elements shaded in blue have those nonmetallic properties.

Some common uses of nonmetals are

in dandruff shampoos (Selenium)in toothpaste (Fluorine)in rayon (Sulfur)

Periodic Table

The elements in Group 17 are the absolute best of all nonmetals!

Group 17 elements are called HALOGENS

(or the worst of all metals!)

What about the green elements?

These are called METALLOIDS.

Properties of METALLOIDSThey are the transition elements

between metals and nonmetals

Some are shiny (aluminum)Some are dull (arsenic)

Most are considered semi-conductors

Some common uses of metalloids are

in aerospace (strong but light) (Boron)in infrared detectors (Germanium)in rat poisoning (Arsenic)

Pick one element that interests you; metal or

nonmetal! periodic table

Periodic Table

You are going to adopt an element andl do a research

project about it