Chem Test Review

kinetic theory

all particles of matter are constantly in motion

elastic

collisons between gas particles are ____ , meaning that no kinetic energy is lost during transfer.

evaporation

the change of state from a liquid to a gas below a substances boiling point

no definite

gases have are assumed to have ___ volume because the particles are very tiny and far away from each other

no

gas particles have ___ attractive forces between them unlike solids and liquids.

random walk

the movement of gas particles is described as ____, meaning that the particles move in a straight line, collide and change directions.

motion

kinetic energy is the energy of ____.

gas

Particles in which state usually have the highest kinetic energy?

collisons

What is gas pressure caused by?

zero

in a vacuum, the gas pressure would be ___.

lower

at higher altitudes, the atmospheric pressure is ____.

760

What is the standard pressure for mmHg?

barometer

What device is used to measure atmospheric pressure?

no

Gas particles are said to have ____ volume and shape.

423 K

150 degrees C is equal to

The ability to flow

___ is due to liquid particles sliding past each other.

imcompressible

liquids are ____ meaning that an increase in pressure will not significantly affect their volume.

decrease

as the temperature of a liquid decreases, the rate of evaporation of that liquid will _____.

highest kinetic energy

evaporation is a cooling process because the particles with the ___ are removed from the substance.

equlibrium

when the rate of evaporation equals the rate of condensation in a closed container

absolute zero

a temperature when all motion stops

\-273 K

absolute zero is equal to

no, definite

a liquid has ___ shape and _ volume

normal boiling point

the temperature at which the vapor pressure of the liquid is equal to standard pressure

freezing point

the temperature at which liquid changed to a soild

sublimation

a change in state from solid directly to gas

ionic

solids that tend to have much higher melting points because of the strong attraction between particles

phase diagram

gives information of the state of a substance its temperature and particle

definite

solids have ____ shape and volume

triple point

the one temperature/pressure combination in which all 3 states of a substance are in equilibrium with each other.