Notes 4-3 and 4-4 Metals, Nonmetals, Inert Gases and Semimetals

Metals Physical Properties Malleable Magnetic Ductile Thermal conductivity Electrical conductivity Chemical Properties Reactive Corrosive

Types of Metals Most of the Periodic Table is made up of metals!!! Alkali Metals – Group 1; most reactive group of elements Alkaline Earth Metals – Group 2 Transition Metals – Groups 3-12 Metals in Mixed Groups – Groups Special Cases: Lanthanides – Similar properties to Group 2 elements Antinides – most created artificially in labs; unstable nuclei Synthetic Elements – atomic numbers higher than 92; made by scientists by forcing nuclear particles to crash into one another

Nonmetals

Inert Gases Group 18!!! Tend to be UNreactive

Hydrogen Element with the simplest atoms Very different from atoms of other elements so not in a family Makes up more than 90% of the atoms in the universe Makes up only 1% of Earth’s crust Rarely found on Earth in its pure form Most hydrogen is combined with oxygen in water

Semimetals Also called metalloids Some of the properties of both metals and nonmetals Most useful property is their ability to conduct electric currents