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.

Explanation:

1.The particles move faster, and their average kinetic energy increases.

If the temperature of gases are increase, the gas particles will gain more kinetic energy and they will begin to move randomly and haphazardly in the container that contains them. Temperature is directly proportional to increase in kinetic energy of gases.

2. The entire container because gases will expand to fill it.

Gases fills up containers and they assume the volume and shape of wherever they are put into. Therefore, the volume of occupied by a gas is actually the volume of the container they occupy. Gases are able to do this because they are free.

3. Because the attractive forces between gas particles are negligible, gas particles can glide easily past one another.

Gases acts fluid because they have little to no intermolecular attraction between them. Therefore they have low density and close to zero packing. This makes them easily glide past one another and this is why they act fluid.

4. Solid

Solids are arranged in a particular pattern. The molecules are close together and they vibrate about a fixed position. Ordered arrangements of particles of solid gives them their unique shapes.

5. Gas particles spread out to fill a container, leading to a low density of the gas.

Density is defined as the amount of substance i.e mass per unit volume. If you have more mass occupying a particular volume, then density will be high. For gases, they move to fill the containers that houses them and so they have low density.

6. Solids have low compressibility compared to liquids.

Gases are the most compressible form of matter. Solids are not easily compressible because their particles have a well ordered arrangement. Solids are rigid and do not readily move. Therefore, they readily restrain compressive forces on them. Liquids molecules moves about within the liquid. They are slightly compressible.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

the answer would be a