| A | B |
|---|
| Group | a vertical colomn of elements with similar properties |
| Period | a row of elements |
| Transition Elements | Groups 3-12 |
| Alkali Metals | Highly reactive metals, with one valence electron |
| Alkaline Earth Metals | Reactive metals with two valence electrons |
| Halogens | most reactive group of nonmetals, have seven valence electrons |
| Noble Gases | a nonreactive group of elements, they have eight valence electrons |
| Metals | make up the majority of the peroidic table |
| Nonmetals | elements on the far right hand side of the periodic table, these guys come in all states of matter |
| Metalloids | Elements that have properties of both metals and nonmetals |
| Lanthanide Series | Atomic Numbers 58-71 |
| Actinide Series | Atomic Numbers 90-103 |
| Atomic Number | The number of protons in an atom, also how the periodic table is arranged |
| Element Symbol | One or two letters that represent an element, can come from its latin name, place of discovery, etc |
| Valence Electrons | The outermost energy level |
| Cation | a positive ion |
| Anion | a negative ion |
| Lose | metallic elements ______ their valence electrons to become cations. |
| Gain | nonmetallic elements _____ electrons to become anions. |
| Dimitri Mendeleev | founder of the periodic table |
