Question 1(multiple choice worth 3 points)
(06.01 lc)
what is true of a sample of gas as temperature is increased?
the particles move faster, and their average kinetic energy decreases.
the particles move faster, and their average kinetic energy increases.
the particles move slower, and their average kinetic energy decreases.
the particles move slower, and their average kinetic energy increases.
question 2(multiple choice worth 3 points)
(06.01 mc)
an evacuated cylinder has a volume of 50 liters. if 20 liters of nitrogen gas and 20 liters of oxygen gas are pumped into this evacuated cylinder, how much of the cylinder is filled with the two gases?
only 80 percent because only 40 out of 50 liters are used.
the entire container because gases will expand to fill it.
only 80 percent because of the low molecular weight of the two gases.
the entire container because of the low molecular weight of the two gases.
question 3(multiple choice worth 3 points)
(06.01 mc)
what postulate of the kinetic molecular theory best explains why gases have high fluidity?
because collisions between gas particles are elastic, there is no loss of energy as particles flow past each other.
because gases consist of large numbers of tiny particles, they spread out and do not come in contact with each other.
because the attractive forces between gas particles are negligible, gas particles can glide easily past one another.
because the average kinetic energy of gas particles increases as temperature increases, gas particles behave more like a liquid.
question 4(multiple choice worth 3 points)
(06.01 lc)
what phase of matter has strong intermolecular attractions that hold all the particles together in a fixed arrangement with a set shape and volume, with particles vibrating in that fixed position?
gas
liquid
plasma
solid
question 5(multiple choice worth 3 points)
(06.01 lc)
which of the following is true of a gas?
a gas is not easily compressed because of the low intermolecular forces.
a gas does not easily mix with other gases because of the high density of substances as gases.
gas particles have high intermolecular forces, leading to the ability to flow easily.
gas particles spread out to fill a container, leading to a low density of the gas.
question 6 (essay worth 5 points)
(06.01 mc)
compare the compressibility of solids and liquids. support your answer by describing the arrangement of particles in solids and liquids.