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Chemistry Unit 6
| Question | Answer |
|---|---|
| ionic starts with a | metal |
| molecular starts with a | nonmetal |
| Ionic has ______ melting points and boiling points | high |
| molecular has _______ melting points and boiling points | Generally low |
| Molecular compounds can be a ______ | solid, liquid, or gas |
| Ionic compounds are ______ | Crystalline solids |
| Molecular compound smallest particle known as | molecule |
| Ionic compound smallest particle known as | formula unit |
| Single Covalent bond | when one pair of electrons is shared between two atoms |
| Double Covalent bond | when two pairs of electrons are shared between two atoms |
| Triple Covalent bond | when 3 pairs of electrons are shared between 2 atoms |
| Magnificent 7 | molecules that have two of the same atoms covalently bonded together |
| What is in the Magnificent 7 | N2, O2, F2, Cl2, Br2, I2, H2 |
| Coordinate Covalent Bonds | when one of the bonding atoms contribute both electrons in the electron pair |
| Polyatomic ions | A covalently bonded group of atoms that has an overall positive or negative charge |
| Resonance | when two or more equally valid electron structures can be written for a molecule |
| Bond dissociation energy (single bond) | farthest apart, lowest energy needed to break it |
| Bond dissociation energy (double bond) | closer together than a single bond, medium energy to break |
| Bond dissociation energy (triple bond) | closest together, most energy to break |
| sigma bond | single bond |
| 180 degrees | linear |
| 120 degrees | Trigonal Planar |
| 109 degrees | Tetrahedral |
| 107 degrees | Pyramidal |
| 105 degrees | Bent |
| is polar unequal or equal sharing | unequal sharing |
| is nonpolar unequal or equal sharing | equal sharing |
| what are the two conditions for a molecule to be polar | one or more bonds within the molecule must be polar the molecule must be asymmetrical |
| Intermolecular attractions | attractions between one molecule and a neighboring molecule |
| Intramolecular attractions | attractions which hold an individual molecule together (ex. covalent bonds) |
| London dispertion forces | non-polar molecules caused by motion of electrons |
| Dipole-Dipole | polar molecules dipole-dipole attraction |
| Hydrogen Bonding | only H-O, H-F, or H-N bonds |
| Network Solids | molecular substances very strong/ very high or no melting point |
| IMF means | intermolecular forces (between neighboring particles) |
| Intramolecular forces | inside bond |
| sigma shape(s) | spheres or dumbells overlapping |
| pi shape(s) | dumbell overlapping |
| unshared pair of electrons | pairs not in a bond |
| shared pair of electrons | in a bond |
| lone pair of electrons | unshared pair |
| unpaired electron | eletron waiting to be bonded |
| VESPR | valence shell electron pair repulsion |
| VSEPR theory | because of electron repulsion, valence electron pairs move as far apart as possible. This affects the shape of the molecule |
Created by:
sophiesoup13
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