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Chemistry- Unit 5

STUDY
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Intermolecular Forces
weak forces of attraction between polar molecules
Van Der Waal's Forces
very weak attraction between opposite dipoles of different polar molecules
Hydrogen Bonds
Stronger attraction of H dipole +, of one molecule and electron pair of one another molecules
Binary Molecular Compounds
2 non-metals covalently bonded, names end in 'ide', uses numeric prefixes in names
"Like Dissolves Like"
Polar things dissolve in polar things, and non-polar things dissolve in non-polar things
Coordinate Covalent Bonding
when one atom donates an electron pair to form a bond Ex: Carbon Monoxide
Diatomic Molecules
Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, Iodine
VSEPR Theory
Valence Shell Electrons Pair Repulsion
Uses math and 3-D modeling to determine molecule shapes and bond angles
Properties of Polar Molecules
1. Bond between two different atoms
2. Non symmetrical molecules
3. contain pos. and neg. dipoles
Properties of Non-Polar Molecules
1. Bond between the same atoms
2. Symmetrical molecules
Acid
is a compound which when dissolved in water, donates it H+ ions (Protons) to the surrounding water
Ternary Ionic Compounds
3 or more elements in their formulas, always contain at least one polyatomic ion, usually the name ends in 'ite'
Binary Ionic Compounds
2 elements, metal bonded with a non-metal, names end in 'ide', always has a net charge of 0
Cation
ion with a positive charge
Anion
ion with a negative charge
Alkanes
hydrocarbon in which there are only single covalent bonds
Ionic Compound
Salts, formed by the transfer from valence electrons, Metal + Non-Metal, the electronegativity is greater than 1.67 , solid, good solubility and good conductivity, formula unit.
Molecular Compound
Non-Salt, formed by the sharing of valence electrons, Non-Metal + Non-Metal, electronegativity less than 1.67, solid-liquid-gas, solubility is poor, conductivity is also poor, molecules.
Organic Alkanes
Methane, Ethane, Propane, Butane, Pentane, Hexane, Heptane, Octane, Nonane, Decane.