1. The Periodic Table of Elements Not just a table, the key to matter!!!!!!!

2. Here it is again http://www.youtube.com/watch?v=Smwlzw GMMwchttp://www.youtube.com/watch?v=Smwlzw GMMwc

4. Chemical Families Elements within the same family on the periodic table have similar properties because they have the same number of valence electrons

5. Alkali Metals Group 1 Single electron in their outer shell Soft, silver-white, and shiny Can be cut with a knife Good conductors of heat and electricity So highly reactive they are never found free in nature Violent reaction in water

8. Alkaline Earth Metals Group 2 They have 2 electrons in their outer shell Not quite as reactive as the alkali metals because they loose 2 electrons when combining chemically Never found free in nature because they are so reactive Calcium and magnesium are important part of this family

11. The Transition Metals Groups 3-12 They have two electrons in their outer shell except Cr, Cu, Nb, Mo, Ru, Rh, Ag, PT, and Au have one. These share electrons when they combine chemically Conduct heat and electricity Many are familiar: gold, silver, zinc, iron, nickel, copper, and tin

12. Zinc

13. Boron Family Group 13 They have 3 valence electrons in their outer shell Boron is metalloid, while aluminum, and the rest of the family are metals Aluminum is the most abundant metal and the 3 rd most abundant element in the Earth’s crust Family includes; boron, aluminum, gallium, indium, and thallium

15. Carbon Family Group 14 Has 4 valence electrons in their outer shells Carbon is a nonmetal, silicon and germanium are metalloids Carbon makes over 5 million different compounds and is the “basis of life” Silicon is the second most abundant element in the Earth’ crust, important in computer chips Family includes carbon, silicon, germanium, tin, and lead

17. Nitrogen Family Group 15 Have 5 valence electrons in their outer shells Tend to share electron when they chemically combined Nitrogen is the most abundant element in the earth’s atmosphere Phosphorus is an active nonmetal that is not found free in nature Family includes: nitrogen, phosphorus, arsenic, antimony, and bismuth

19. Oxygen Family Group 16 Have 6 valence electrons in their outer shell They share electrons when chemically combined Oxygen is the most abundant element in the Earth’s crust and second most abundant element in the atmosphere Oxygen is an extremely reactive element and combines with almost all other elements Family members include; oxygen, sulfur, selenium, tellurium, and polonium

21. The Halogens Group 17 Have 7 valence electrons in their outer shell They are the most reactive nonmetals Never found free in nature They share or gain one electron when they chemically combined Halogen means salt formers and all compounds with halogens are called salts. Astatine is a metalloid Family members include: chlorine, fluorine, bromine, iodine, and astatine

23. Noble Gases Group 18 They have 8 electrons in their outer shell, except helium which has 2, means they are normally un-reactive Also known as the inert gases Found in small amount is the Earth’s atmosphere, argon the most common Family members include; helium, neon, argon, krypton, xenon, and radon

25. After failing 3 chemistry tests, Phoebe’s parents wall papered her room with the Periodic Table!!!!!!

26. Rare-Earth Elements These have properties that are similar to one another All have 2 valence electrons They have been moved to the bottom to make the periodic table easier to read First row is the lanthanide series, shiny, soft, malleable metals, that are conductive The second row is the actinide series, all are radioactive and only the first four are present in nature Elements numbered 92-118 are all synthetic and radioactive Uranium is the best known rare-earth metal

28. Periodic Properties of the Elements Certain properties of elements vary in regular ways from left to right across a period. These properties include electron arrangement, reactivity, atomic size, and metallic properties

29. Valence Electrons

30. Ionic Charges

32. Atomic Radius

33. http://www.youtube.com/watch?v=LFsdbLF HgY8http://www.youtube.com/watch?v=LFsdbLF HgY8

34. Discover That Element Game

35. Now don’t pretend…