1. The Periodic Table

2. Describe the Periodic Table The periodic table is a chemistry reference It arranges all the known elements in a grid

3. Describe the Periodic Table Elements are arranged left to right and top to bottom in order of increasing atomic number This order goes along with increasing atomic mass

4. Describe the Periodic Table Elements have different atomic masses - the number of protons plus neutrons increases up the table. Rows - elements of each row have the same number of energy levels (shells). Columns - elements have the same number of electrons in the outermost energy level or shell.

5. Describe the Periodic Table The different rows of elements are called periods. –Tell you the number of energy levels (ex: Period 3 has 3 energy levels) The different columns of elements are called groups or families –Elements in the same family have similar properties and the same number of electrons in its outer energy level (column 1 has 1 electron in its outer level)

6. Describe the Periodic Table

7. Valence Electron These are the electrons in the outermost energy level. They are important because these electrons determine how an element will react.

9. Describe How To Read The Periodic Table

10. Describe how to read the periodic table: Every table has:

11. Describe how to read the periodic table: Atomic Number The number of protons in an atom identifies the element.

12. Describe how to read the periodic table: Atomic Symbol: The atomic symbol is one or two letters chosen to represent an element ("H" for "hydrogen," etc.). These symbols are used every where in the world. The symbol is the abbreviation of the element or its Latin name of the element.

13. Describe how to read the periodic table: Atomic Mass: The atomic mass is the average mass of an element in atomic mass units ("amu"). Though individual atoms always have a whole number of 1 amu, the atomic mass is shown as a decimal number That’s because it is an average of all the isotopes of an element.

14. Click the link below for an interactive and informative periodic table. http://www.chemicalelements.com/

15. Click the link below for an amazing pictorial periodic table. http://www.chemsoc.org/viseleme nts/pages/periodic_table.html

16. Review the Periodic Table with The Periodic Table Adventure: http://web.buddyproject.org/web017/web017/