Ideal Gases

What would you expect to happen if you decrease the volume of an ideal gas while keeping the temperature constant?

• the pressure will increase

• the pressure will decrease

What would you expect to happen if you decrease the pressure of an ideal gas while keeping the temperature constant?

• the volume will increase

• the volume will decrease

What would you expect to happen to an ideal gas if you were to increase the temperature while keeping the volume constant?

• the pressure will increase

• the pressure will decrease

How would you expect a cold morning to affect your car's tire pressure?

• the tires will likely have lower air pressure

• the tires will likely have higher air pressure

Tags

NGSS.MS-PS1-4

Which of the following is not one of the assumptions of the kinetic molecular theory for ideal gases?

• The particles attract and then repel each other.
• The collisions between particles are elastic
• The particles are in constant random motion.
• The particle size is very small compared to the space between the particles.

Tags

NGSS.MS-PS2-1

what is a barometer?

• a device used to find if a gas is ideal or real
• a device used to measure the kelvin temperature of the room
• a device used to measure the vapor pressure in a closed container
• a device used to measured the atmospheric pressure 

A gas that has a pressure of 2 Pa and a volume of 10 m3. Choose the equation which should be used to find out the new volume if the pressure was changed to 1 Pa keeping the system at 300 K?

• P1/T1 = P2/T2

• P1V1 = P2V2

• V1/n1 = V2/n2

• PV = nRT

The gas in the container is at a pressure of 3.00 Pa at 298 K. What would be the pressure in the container at 325 K? Choose the equation which is suitable to find the answer

• P1/T1 = P2/T2

• P1V1 = P2V2

• V1/T1 = V2/T2

• PV = nRT

Tags

NGSS.MS-PS1-4

___________is the result of the weight of a column of air pushing on an area.

• air pressure
• density
• volume
• none of the above

More molecules close together, means density is:

• high
• low