2. Periodic Trend is : the tendencies of certain elemental characteristics to increase or decrease as one progresses along a row or column of the periodic table of elements.

3. Proton is : Gives the identity of the atom; found at the top of the element box.

4. Reactivity is: the tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy

5. Metals are: an element, compound, or alloy that is a good conductor of both electricity and heat. Metals are usually malleable, ductile and shiny

6. Periods are : a series of rows, left to right, same number of electron shells

7. Groups/families are : elements that have the same number of electrons in their outer orbital – valence electrons

8. Alkali metals are : very reactive; all have one electrons in outer shell, one electron away from being happy (full shells), malleable (bendable) and sometimes soft enough to be cut with a dull knife

9. Nonmetals are : Elements which do not exhibit metallic properties, generally located in the upper right-hand corner of the Periodic Table.

10. Metalloids are : Elements that posses the qualities of metals as well as non metals

11. Noble Gases are : all odorless, colorless, non-atomic gases with very low chemical reactivity, have the maximum number of electrons possible in their outer shell, VERY STABLE!!!!

12. Transition Metals are : metals located in columns 3 through 12 of the periodic table