| A | B |
|---|
| periodic | following a regular repeating pattern |
| period of elements | a row of elements on the periodic table |
| family of elements | a column of elements on the periodic table |
| atomic radius | distance from center of atom to outermost boundary of electron cloud |
| shielding | repulsion of outer electrons by electrons closer to the atomic nucleus |
| First Ionization Energy | amount of energy required to remove and electron from a neutral atom and make a cation |
| Electron Affinity | amount of energy an atom with expend to keep an additional electron and become an anion |
| Electronegative | a derived value indicating the atom's control of electron(s) in a chemical bond |
| metal | an element that has "free" electrons |
| malleability | can be hammered into a thin sheet |
| ductility | can be drawn into a wire |
| luster | shiny |
| conductor | transmits heat and/or electricity |
| insulator | blocks the transmission of heat or electricity |
| metalloid | semiconductor element |
| cation | positively charged ion |
| anion | negatively charged ion |
| oxidation | loss of electron(s) |
| reduction | gain of electron(s) |
| Noble Gas | Inert Gas |
