5 Written Questions

1. a unit for Temperature (T)
2. Detecting the odor of a substance released from an open bottle across a room is made possible by ______, the random scattering of gas molecules.
3. __________ states that under identical conditions of temperature and pressure, two gases’ relative diffusion rates vary inversely with the square roots of their molecular masses.
4. a unit for volume (V)
5. ________ indicates that a gas has been measured at standard conditions.

5 Matching Questions

1. Adiabatic system
2. Point masses
3. Molar volume
4. Ideal gas equation
5. Charles’s law

1. a The equation V = kT (volume of a quantity of gas varies directly with the Kelvin temperature) represents _________.
2. b A(n) _____ allows no heat exchange with the surroundings.
3. c PV=nRT, which represents the relationship among pressure, temperature, volume, and moles of a gas, is called the _______.
4. d The ______ of a gas is the volume occupied by one mole of the gas under standard conditions.
5. e ________ are considered to have no volume or diameter because they are so small and so far apart.

5 Multiple Choice Questions

1. A(n) ______ is composed of molecules with mass, but with no volume and no mutual attraction between the gas molecules.
   1. STP
   2. kPa
   3. Ideal gas
   4. Real gases
2. a unit for pressure (P)
   1. kPa
   2. R
   3. K
   4. STP
3. the Boltzmann constant , equal to 8.31J/mol K
   1. cm3
   2. R
   3. K
   4. n
4. 101.325 kilopascals is _______.
   1. Standard atmospheric pressure
   2. Avogadro’s principle
   3. Adiabatic system
   4. Standard temperature
5. _________, or 0◦C, is one of two standards used to compare volumes of gas.
   1. Ideal gas equation
   2. Standard temperature
   3. Molar volume
   4. Standard atmospheric pressure

5 True/False Question

1. Avogadro’s principle → The following statement is called _______; At equal temperatures and equal pressures, equal volumes of gases contain the same number of molecules.
   

   True        False

2. Dalton’s law → Adding partial pressures of all the gases in a container to find the total pressure in the container demonstrates ________.
   

   True        False

3. Real gases → Unlike an ideal gas, the molecules of ______ have both volume and an attraction for one another.
   

   True        False

4. Boyle’s law → ________ states that the pressure exerted by a gas varies inversely with its volume, if the amount and temperature of the gas remain constant.
   

   True        False

5. n → the Boltzmann constant , equal to 8.31J/mol K
   

   True        False