Thermo - ideal gas

Gases have...

• A definite shape and volume
• A definite shape but no definite volume
• No definite shape but a definite volume
• No definite shape or volume

What is the correct temperature on the Kelvin scale equal to 30^oC?

• 303K
• 243K
• 313K
• 253K

If the temperature in a tank rises 15.6^oC, how many Kelvin will it rise?

• 25.6K

• 288.6K

• 273K

• 15.6K

Adding heat to a non-flexible container of gas will cause

• the molecules to slow down and hit the sides less often. The pressure will decrease.

• the temperature to increase and molecules to speed up. The pressure will not be affected.

• the molecules to speed up and hit the sides more often. The pressure will increase.

Adding more gas molecules to an equal size container held at a steady temperature will:

• Increase the pressure because there are more molecules, and therefore the sides of the container will be hit more often.

• not affect the pressure.

• Increase the pressure because the molecules will be moving faster.

Temperature describes  the ______________ of molecules.

• volume

• mass

• motion

• conductivity

What is happening as you move from volume 1 to volume 2?

• The pressure is held constant

• There are the same number of molecules in a smaller volume, so volume 2 will have a higher pressure because the molecules are hitting the sides more often.

• There are more molecules in volume 2, which would cause them to be hotter and move faster, therefore pressure is increased.

• Volume 1 would have a higher pressure.

If I have a flexible container of gas, which of the following is true?

• If I remove some of the gas molecules, the container will increase in size.

• The pressure on the inside of the container will be equal to the pressure outside the container.

• If I heat up the gas molecules, the container will decrease in size.

If a balloon is cooled what will happen to the volume?

• Volume will increase
• Volume will decrease
• Volume will not change

Which of the following would increase the (gas) pressure of a system?

• Increase the Temperature
• Pump in more gas
• Decrease the volume
• All of these