Gases Review

At a constant pressure, the volume decreases.  What happens to the temperature?

• increases
• decreases
• stays the same

At a constant temperature, the volume decreases.  What happens to the pressure?

• increases
• decreases
• stays the same

Under which of the following conditions do REAL gases behave most like IDEAL gases?

• High pressure and high temperature
• High pressure and low temperature
• Low pressure and low temperature
• Low pressure and high temperature

Which of the following is False about the Kinetic Molecular Theory?

• Gas particles have mass and occupy space (the individual particles have volume)

• Gas particles do not have mass and occupy space (the individual particles have volume

• Gas particles move in straight lines

• The more heat energy the gas particles have, the faster they move

Which of the following describes why the pressure of a gas in a tank increases when temperature increases?

• As temp increases, the particles have more space to move and collide less.  
• As temp increases, the particles have less space to move and collide more.
• as temp increases, the particles slow down and collide less.
• as the temp increases, the particles speed up and collide more

Tags

NGSS.HS-PS1-5

A hot air balloon uses heat to inflate the balloon. What two variables does this relate?

• Pressure and Volume
• Volume and Temperature
• Temperature and Pressure
• Pressure, Temperature and Volume 

Tags

NGSS.MS-PS1-4

Ears pop on an airplane because the decrease in pressure ____________ the volume of air inside your ears?

• increases
• decreases

The volume of a container is cut in half, what happens to the pressure?

• It is also cut in half.
• It is doubled.
• It is cut by 1/4th
• It is quadrupled.

What happens to the temperature of a gas if the pressure is cut by 1/3rd?

• The temperature is also cut by 1/3rd.
• The temperature triples.
• The temperature is 3 K less.
• The temperature is 3 K more.

Convert -53 ⁰C to K

• 326 K
• -53 K
• 220 K
• Probably impossible.