Definitions of Different Elements By: Morgan Barrow

Alkali Metals Alkali Metals are very reactive to water and air When introduced to air the Alkali metal tends to cover its surface with oxides Alkali Metals are the first group of the periodic table The only Alkali metals are Lithium, Sodium, Potassium, Rubidium, cesium, and Francium Alkali metals lose one electron and form eons with a single positive charge http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/alkmet.html

Alkali Earth Metals The alkali earth metals are sometimes referred to as Alkaline They have a oxidization number of +2, in turn this makes them very reactive Because they are so reactive they are not found “free in nature” The alkali metals are Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium http://www.periodictable.com/Elements/AlkaliEarthMetals/index.html

Noble Gases Noble gases are part of group 18 of the periodic table They are the least reactive elements This is due to the extremely high amount of valence in its shell All noble gases conduct electricity, are fluoresce, and are colourless and odorless The noble gases are Helium, Neon, Argon, Krypton, Xenon, and Radon

Halogens Halogens are group 7a on the periodic table They all form negatively charged ions Halogens means salt former in Greek Halogens include chlorine, Fluorine, Iodine, and Bromine http://www.paraspolymer.com/calcium-chloride.htm

Non-Metals Non-metals are located on the upper right side of the periodic table Non-metals are brittle and not good at conducting heat and electricity Some are solid and some are gases, but only one is a liquid (Bromine) The non-metals are as follows Hydrogen, Sulfur, carbon, Nitrogen, Phosphorous, Selenium, and Oxygen http://www.carboterials.org/

Metalloids Metalloids are in-between being a metal and a non- metal Metalloids are solid at room temperature Metalloids are brittle, but not ductile They sometimes conduct electricity and are bad at conducting heat

Transition Metals There are 38 transition metals and are in groups 3 through 12 These metals are both malleable and Ductile They also conduct heat and electricity Transition metals have more electrons that they use to combine with other elements The only transition metals worth mentioning are Iron, cobalt, and nickel This is because they are the only elements with their own magnetic field http://mrjvilla.pbworks.com/w/page/60159147/Cobalt%20Steph

Rare Earth Elements Rare earth elements are natural non-toxic elements that are essential in newer technology There are 16 REE’s Even though their called RARE earth elements each is more common in the earths crust then silver Cerium, Yttrium, Neodymium, and Lanthanum are more common then lead Even though there plentiful they are not concentrated hence the name http://en.wikipedia.org/wiki/Yttrium

Other Metals most common properties. They are solid, ductile, malleable, good conductors of heat and electricity, high density, and opaque The other metals are Aluminum, Gallium, Indium, Tin, Thallium, Lead, and Bismuth All the Other Metals are in groups 13, 14, and 15 All of these are solid http://periodictable.com/Elements/083/

Bibliography http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/alkmet.html http://www.periodictable.com/Elements/AlkaliEarthMetals/index.html http://www.chemicalelements.com/groups/alkaline.html http://www.sciencedaily.com/articles/n/noble_gas.htm http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch10/group7.php http://chemistry.about.com/od/elementgroups/a/nonmetals.htm http://chemistry.about.com/od/elementgroups/a/nonmetallist.htm http://geraldrhymes21.weebly.com/-metalloids.html http://www.chemicalelements.com/groups/transition.html http://www.tasmanmetals.com/s/RareEarth.asp http://en.wikipedia.org/wiki/Rare_earth_element http://www.elementalmatter.info/other-metals.htm