Pressure Volume Temperature

If we decrease the pressure on a substance, the density will

• increase

• decrease

• remain the same

Answer explanation

If we decrease the pressure we are increasing the volume (making more space for the molecules ). The molecules will be less compacted.

Less compact = lower density

If we increase the pressure on a substance, the density will

• increase

• decrease

• remain the same

Answer explanation

Increasing the pressure means we are squeezing the substance, lowering its volume. The molecules will be forced closer together and be more compacted.

More compact = higher density

The pressure inside the balloon will:

• Decrease

• Increase

• Remain the same

• Not enough information to formulate an answer

Tags

NGSS.MS-PS1-4

The pressure of the gas in the balloon in the ice water will be:

• Greater than that of the balloon in the boiling water.

• Less than that of the balloon in the boiling water.

• The same as that of the balloon in the boiling water.

• Not enough information to answer the statement.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

We can increase the pressure of a gas by:

• Adding more gas.

• Reduce the volume of the container.

• Increase the temperature of the gas.

• None of the above answers.

Tags

NGSS.MS-PS1-4

If the pressure in a balloon remains constant what happens to the balloon's volume as the temperature of the air increases?

• the balloon shrivels up

• balloon expands

• balloon stays the same size

• balloon shrinks

Tags

NGSS.MS-PS1-4

The pressure inside the syringe will decrease if we move the plunger in:

• Direction A

• Direction B

• We don't have to move the plunger as the pressure will change on its own.

• None of the above answers.

Tags

NGSS.MS-PS2-2

Weather balloons travel to a great height gathering data before the balloon bursts. This is because the atmospheric pressure (layer of gas surrounding the earth):

• Increases the higher you travel.

• Decreases the higher you travel.

• Remains the same.

• Not enough information to answer the question.

Tags

NGSS.MS-ESS2-5

What happens to the volume of a gas if the pressure is increased while the temperature remains constant?

• The volume increases

• The volume decreases

• The volume remains the same

• The volume fluctuates

According to Charles's Law, what happens to the volume of a gas when the temperature increases at constant pressure?

• The volume increases

• The volume decreases

• The volume remains the same

• The volume fluctuates