| Octet - The Eight valance electrons in the highest energy level of atom. Ex: Octagon has 8 sides... |
| anion - An ion with a negative charge |
| cation - An ion with a positive charge |
| chemical bond - A force that holds atoms or ions together |
| chemical formula - Formula that shows what elements and number of atoms a compound is made of Ex: H2O (water) |
| covalent bond - Chemical bond that forms when atoms share electrons |
| crystal lattice - Ions arranged in a regular pattern Ex: salt crystals |
| electron dot diagram - Model of atom in which each dot represents an electron |
| electrons - Negatively charged particles that orbit the nucleus of atoms |
| ion - Atom that has gained or lost electrons, can be either positively or negatively charged |
| ionic bond - Chemical bond forms when electrons are transferred from one atom to another |
| ionization energy - Energy required to remove 1 electron from a neutral atom |
| metals - Atoms of elements that lose electrons and form positive ions/cations. Are good conductors of heat and electricity. |
molecule - Group of atoms held together by covalent bonds, has no charge is neutral
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| stable electron configuration - When the highest energy level is full and atom is now stable and won't react |
| valance electrons - Electrons found in the highest energy level, only 8 electrons can fit in the highest energy level |
