Elements and Their Properties Metals Chapter 19 Section 1

What are the 3 main groups that elements can be classified into? Metals Nonmetals Metalloids

Metals Properties –Good conductors of heat and electricity –Solid at room temperature (except mercury) –Luster  Reflect light –Malleable  Hammered/rolled into sheets –Ductile  Drawn into wires

Alkali Metals Group 1 Softer than most metals Most reactive metals 1 Valence electron Combine readily with other elements Don’t occur in nature in elemental form

Alkali Metals Uses Potassium and Sodium  Health Lithium  Treats Bipolar depression Francium  Radioactive element found in uranium minerals

Alkaline Earth Metals Group 2 Combine readily with other elements 2 Valence electrons

Alkaline Earth Metals Uses Magnesium and Strontium  Fireworks Magnesium  Cars, planes, spacecraft Calcium  Bones Barium  Used with X-rays Radium  Radioactive, previously used to treat cancer

Transition Elements Groups 3-12 Found in nature as uncombined elements

Transition Metals Uses Iron, Cobalt, Nickel  Steel Copper, Silver, Gold  Coins, Jewelry, Wiring Zinc, Cadmium, Mercury  Protective Coatings, Batteries, Thermometers

Inner Transition Metals Lanthanides –Atomic Numbers –Used in the Motion Picture Industry and TV Actinides –Atomic Numbers –Radioactive and Unstable (Uranium)