| A | B |
|---|
| electron | no mass, negative charge, found in orbits |
| proton | mass of 1, positive charge, found in the nucleus |
| neutron | mass of 1, no charge, found in the nucleus |
| atomic # | = # of protons |
| atomic mass | = # of protons + number of neutrons |
| period | row on the periodic table |
| column | also known as a family on the preiodic table |
| shells | also known as orbits |
| atom | the smalles particle that still has the properties of the element |
| compound | has at least two different types of atoms |
| transition metals | this group of metals is found in the middle of the preriodic table |
| alkali metals | very reactive metals, have only 1 valence electron |
| alkaline earth metals | very reactive metals, have only 2 valence electrons |
| halogens | very reactive non-metals, 7 valence electrons |
| noble gases | unreactive family |
| cation | positive ion |
| anion | negative ion |
| bohr diagrams | a drawing showing all electrons |
| stable octet | the perferred arrangement of electrons |
| ionic bond | involves tranfer of electrons |
| covalent bonding | sharing of electrons |
| ionic compound | compound with a metal and non-metal |
| covalent compound | compound with two non-metals |
| lone pair | pair of valence electrons not used in bonding |
| lewis diagram | drawing showing ONLY valence elecrtrons |
| diatomic molecule | has two of the same atom |
| ide | what the non-metal's ending is changed to |
| subscript | lower case number representing the number of that atom |
| mutivalent | a metal that has more than one ion charge |
| ion charge | the charge on an atom |
| polyatomic ion | a group of atoms joined by covalent bonds |
| coefficient | a number written in front of a formula |
| reactants | occur on the left side of the arrow |
| products | on the right side of the arrow |
| chemical reaction | produces a new substance with new properties |
| word equation | equation for a chemical reaction involving words |
| symbol equation | a equation involving formulas |
| balanced chemical equation | has coefficients to ensure an equal number of atoms on the left and right sides |
