How can we help?

You can also find more resources in our Help Center.

30 terms

Covalent Bonding Test

STUDY
PLAY
VSEPR Theory
because electron pairs repel, shapes adjust so that valence electrons are as far apart as possible
Nonpolar Bond
like atoms bond and share equally
Polar Covalent Bond
2 atoms of different elements and electrons share equally
Dipole
molecule that has two poles
Dispersion Forces
weak force caused by the motion of electrons, more electrons=more strength
Dipole Interactions
polar molecules are attracted to each other, positive attracts to negative
Hydrogen Bonds
hydrogen is covalently bonded to a very electronegative atom is also weakly bonded to an unshared pair of another electronegative atom
Surface Tension
inward force that tends to minimize the surface area of a liquid
Surfactant
wetting agent such as soap or detergent
Wetting Agent
substance that interferes with hydrogen bonds
Heat of Vaporization
amount of energy needed to convert i gram of a substance from liquid to a gas at the boiling point
Condensation
amount of energy removed in order to convert 1 gram of a substance from a gas to a liquid at the boiling point
Solution
samples containing dissolved substances
Solvent
dissolving medium
Solute
dissolved particles
Solvation
process of something dissolving
Electrolytes
compounds that conduct electric current in aqueous solutions or molten state
Nonelectrolyetes
compounds that do not conduct electric current in aqueous solutions or molten state
Water of Hydration
water in crystal
Hydrate
compound containing water of hydration
Efflorescence
losing the water of hydration to the air because the vapor pressure is higher than that of the water vapor in the air
Hygroscopic
compounds that remove moisture from the air
Desiccants
hygroscopic substances used as drying agents
Deliquescent Compounds
substances that remove enough water from the air to dissolve completely and form solutions
Suspensions
mixtures from particles settle out upon standby
Tyndall Effect
scattering of light in all directions
Colloids
heterogeneous mixtures containing particles that are intermediate in size
Brownian Motion
chaotic movement of colloidal particles
Emulsions
colloidal dispersions of a liquid
Unshared Pair
a pair of valence electrons that is not shared between atoms