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Chem chap11

Chap 11 chemistry notes

QuestionAnswer
The electrostatic attractions between molecules intermolecular forces
Intermolecular forces are ___ than the bonds that hold the molecule together. weaker
Intermolecular forces influence the ___ properties of many substances. physical
Polar molecules align themselves so that the positive end of one molecule is near the negative end of another. This intermolecular force is called what? dipole-dipole
The stronger the polarity the ___ the attraction between the molecules. stronger
These intermolecular forces are stronger than dispersion forces but weaker than forces in molecules with hydrogen bonded to O, N, of F. dipole-dipole
Special dipole-dipole type intermolecular forces in which one of the participating atoms is hydrogen and the other is flourine, oxygen, or nitrogen. hydrogen bonds
The strongest intermolecular bonds in covalent molecules, Hydrogen
This type of intermolecular force is a result of temporary dipoles. Dispersion forces
According to the kinetic-molecular theory of matter particles in solids are always moving and ____. vibrating
Dispersion forces occur between ___ molecules. all
Dispersion forces are the only intermolecular forces acting on ___ molecules. nonpolar
Dispersion forces are the ___ intermolecular forces. weakest
___ molecules have more electrons and are more likely to participate in dispersion forces. Larger
___ bonds that hold molecules together are ___ than all other intermolecular forces. Chemical stronger
The lower the temperature the __ atoms vibrate. slower
Solids have very low rates of ___. diffusion
Solids are not ___. permeable
Solids have higher density (except for water), fixed shape, fixed volume, and resist___. compression
These have a naturally orderly shape, regular 3D patterns with sharp angles and edges. crystalline solid
An example of a crystalline solid is ___. Salt
These have no distinct shape or pattern. Glass is an example. amorphous solid
___ compounds are sometimes amorphous. covalent
Some substances can form more than one type of crystal lattice. These are called _. polymorphous
The energy of a crystal that is released when the gas particles form crystals. lattice energy
____ forces must be overcome when a crystal is melted or dissolved. binding
When a crystal melts, ____ energy is used to overcome binding forces. thermal
particles that are held together by intermolecular forces that balance out their kinetic energy. liquids
Liquids have __ energy than gases. more
Liquids have ___ intermolecular forces than gases. stronger
Liquids are not in a __ position fixed
Liquids are __dense than gases and __ dense than solids. more, less
the attraction between particles COhesion
the attraction between the particles of the liquid and the particles of something else ADhesion
Surface acting agents that break down the normal surface tension of liquids. surfactants
the elastice skin that forms on the surface of liquids surface tension
results from intermolecular forces between the liquid and the container meniscus
results when molecules with above average speeds break away from the liquid phase to become a gas vaporization
the reverse of vaporization condensation
vaporization below the boiling point evaporation
vaporization that occurs at the boiling point boiling
the lower the atmospheric pressure the --- it is to boil easier
the temperature at which the vapor pressure equals 760 torr normal boiling point
the process of separating liquids into fractions using the fact that each part has a separate boiling point distillation
the point at which a solid, liquid, and gas phase of matter can exist at once triple point
highest temperature at which a gas can be liquified critical temperature
the pressure that is required to liquefy a gas at its critical temperature critical pressure
Created by: kdcribb