Question 1

Place the descriptions in the correct state of matter.

Question 2

Choose the BEST description of the diagram.

Accepted Answer

The increase in added energy increases molecule motion.

Answer

The decrease in kinetic energy of molecules results in a phase change.

Answer

Energy is required for condensation.

Answer

The charge of the particles changes over time.

Question 3

How does a neon sign relate to kinetic energy and phase change?

Accepted Answer

Electrical energy accelerates the electrons in the neon gas. The gas ionizes and becomes plasma, containing both positive and negative ions.

Answer

The electrical current in the tube generates the neon gas that glows in the dark.

Answer

Neon atoms accelerate once electrical energy is turned on to the tube. The faster the atoms move in the tube, the brighter the glow we see.

Answer

Electrical energy excites the neon atoms. They spin faster in the tube producing electromagnetic waves that we see as colors.

Question 4

What is the best conclusion for the changing of phases on a molecular level?

Question 5

Which of these statements best supports the conclusion that a substance is in the plasma phase?

Accepted Answer

The substance contains charged particles.

Answer

The substance is flowing.

Answer

The substance is at a high temperature.

Answer

The substance has low kinetic energy.

Question 6

Place the common states of matter in order of intermolecular force of attraction.

Question 7

Match the arrow letter in the diagram with the correct phase change. Hint: make sure to look at the direction of the arrow.

Question 8

Match the parts of the heating curve with the correct label.

Question 9

Based on the model, which conclusion can be made?

Accepted Answer

As volume increases, pressure decreases.

Answer

As volume increases, pressure increases.

Answer

As volume increases, temperature increases.

Answer

Density decreases, temperature decreases.

Question 10

Temperature also affects the motion of atoms in a gas. Given what you know about temperature, pressure, and volume, which statement(s) is correct?

Question 11

In the model above, a volume of gas is held in a container. Over time, the container is heated by the flame at the bottom. Choose the statements do not describe what is happening inside the containers from left (V1) to right (V2).

Question 12

What results would you expect from an experiment with 3 balloons that are inflated to the same size with the first placed in ice water, the second in tap water, and the third in water heated to 65 degrees Celsius?

Accepted Answer

The third balloon in the heated water would expand.

Answer

All three balloons would expand.

Answer

The second balloon would expand.

Answer

All three balloons would shrink.

Answer

The first balloon in the ice water would expand.

Question 13

Which scenario listed below DOES demonstrate the relationship between the pressure and temperature in a gas?

Question 14

During the winter, air molecules in a balloon move ________ than in the summer. As a result, the pressure of the balloon is ________ in the winter.

Accepted Answer

slower, low

Answer

faster, low

Answer

faster, higher

Answer

slower, high

Question 15

How is the volume of a gas related to its concentration of particles?

Accepted Answer

As the volume of a contained gas decreases, its pressure concentration of particles will increase.

Answer

As the volume of a contained gas expands, its pressure concentration of particles will increase.

Answer

As the volume of a contained gas compresses, its pressure concentration of particles will decrease.

Answer

As the volume of a contained gas extends, its pressure concentration of particles will increase.

Question 16

A model of an ideal gas is shown here. A student designs an experiment to test the impact of increasing the pressure on the system. Which prediction is most likely to be supported by the data?

Accepted Answer

As pressure on the gas increases, the volume will decrease and the temperature will increase.

Answer

As pressure on the gas increases, the volume increases, and temperature decreases.

Answer

As pressure on the gas increases, the volume will increase and the temperature will decrease.

Answer

As pressure on the gas increases, the volume and temperature will both decrease.

Question 17

A student designs an experiment using an ideal gas, as shown here. Which variable change would most likely increase the volume of the system, as shown in the image?

Accepted Answer

decreasing the pressure while increasing the temperature

Answer

increasing the pressure while holding the temperature constant

Answer

decreasing the temperature while increasing the pressure

Answer

decreasing both the pressure and the temperature

Question 18

What is one correct explanation for hot air balloons rising

Accepted Answer

Air inside the balloon becomes less dense than air outside of it.

Answer

As temperature increases, so does the pressure at constant volume.

Answer

Warm air inside the balloon escapes keeping the temperature constant.

Answer

Air inside the balloon becomes more dense than the air outside of it.

Question 19

Prompt: A student wants to describe the phenomenon behind similarities and differences in the particle motion for the states of matter shown in the model below. What question should the student ask?

Accepted Answer

Why do gas particles have less intermolecular force between them than liquids?

Answer

How much energy is released to change a gas into a plasma?

Answer

What kind of chemical change is needed to change a liquid to a gas?

Answer

Why do liquid particles have less motion than solid particles?

Question 20

Carlos was given a marshmallow and a syringe in class to experiment with. He placed the marshmallow in the syringe and sealed the end. When he depressed the plunger of the syringe what happened to the marshmallow and why?

Accepted Answer

The increased pressure pushed the molecules closer together and caused the marshmallow to shrink.

Answer

The increased pressure allowed the molecules to spread apart and caused the marshmallow to grow larger.

Answer

The decreased pressure allowed the molecules to spread apart and caused the marshmallow to grow larger.

Answer

The decreased pressure pushed the molecules closer together and caused the marshmallow to shrink.

Question 21

What is the approximate temperature for the boiling point of this substance when the pressure is 30 atm?

Accepted Answer

50 C

Answer

0 C

Answer

200 C

Answer

-15 C

Question 22

What is the pressure and temperature where all three states of matter coexist?

Accepted Answer

6 atm, -15 C

Answer

6 atm, 200 C

Answer

300 atm, 200 C

Answer

300 atm, -15 C

Question 23

Which letter represents a substance in the solid phase?

Accepted Answer

C

Answer

B

Answer

A

Question 24

Match the example to the correct relationship it demonstrates.

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