GasesGasesVocabularyVocabulary

atmospheric pressureatmospheric pressure•____ is the collision of air

molecules with objects.

Avogadro's LawAvogadro's Law•Equal volumes of ideal or

perfect gases, at the same temperature and pressure, contain the same number of particles, or molecules is known as ___.

barometerbarometer•A ___ is used to measure

atmospheric pressure.

Boyle's LawBoyle's Law•According to ____, the

pressure and volume of a gas are inversely related at constant mass and temperature.

Charles' LawCharles' Law•____ states that volume and

temperature (in Kelvin) of a gas are directly related at constant mass and pressure.

combined gas lawcombined gas law•The _____ combines the 3 gas

laws into one - use this formula when none of the variables remains constant.

compresscompress•To ___ something, we apply

pressure to cause it to shrink in volume.

Dalton's Partial Dalton's Partial Pressure LawPressure Law

•____ states the total pressure of a mixture of gases equals the sum of the partial pressures of the individual gases.

diffusiondiffusion•___ is the tendency of

molecules to move toward areas of lower concentration. Exp. Air Freshener.

effusioneffusion•____ is the passing of gas

molecules through a tiny opening in a container. Exp. Balloon with a tiny hole.

expandexpand•When something becomes

larger in volume, it is said to ___.

gasgas• One of the three commonly recognized

states of matter, a ___ is a substance that has neither definite shape nor definite volume. Like liquids, they are fluids and assume the shape of their containers. Unlike liquids, they will expand to fill any container, regardless of its size. They also condense into liquids or solids when sufficiently cooled or compressed.

gas pressuregas pressure•____is the collision of gas

molecules with the walls of the container.

Gay-Lussac's LawGay-Lussac's Law•____ demonstrates that

pressure and absolute temperature (K) of a gas are directly related at constant mass and volume.

ideal gasideal gas•An ____ is assumed to consist

of a large number of molecules in random motion, which obey Newton's laws of motion. They also obey the other gas laws regarding PT and V.

ideal gas lawideal gas law•The ____ considers the

amount of gas in the system, represented by n.

kelvin temperaturekelvin temperature •The ___ scale defines 0 K as

the absence of all thermal energy (movement of particles), or absolute zero. We get K by adding 273 to our temperature in Celsius.

kinetic energykinetic energy•___ is the form of energy that

an object has by reason of its motion. We call it the energy of movement.

potential energypotential energy• Energy stored by an object by virtue

of its position is called ____. Similarly, a stretched spring has stored energy that is released when the spring is returned to its unstretched state. Other forms include electrical energy, chemical energy, and nuclear energy.

standard pressurestandard pressure•____ is 1 atm, 760 mm Hg and

101.3 kPa.

standard temperaturestandard temperature•___ 0 degrees C or 273 Kelvin.

temperaturetemperature•____ describes the amount of

motion of particles.

universal gas universal gas constantconstant

•The ___ is represented by R in our ideal gas law equation; it is derived from all of the measurements obtained at STP.

vacuumvacuum•A ___ is empty space with no

particles and no pressure. Exp. Space.