Gases

100 degrees Celsius is equal to _______ Kelvin. 

• 0 K
• 273 K
• 173 K
• 373 K

What will happen to the volume of a balloon if you put it into hot water?

• 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

If the temperature of a gas decreases, the pressure...

• Decreases

• Increases

• Does not change

Which container will have lower pressure?

• left
• right
• they both have the same pressure

When a cold tire is inflated to a certain pressure and then is warmed up due to friction with the road, the pressure increases. This happens because the

• air molecules hit the walls of the tire less frequently
• rubber in the tires reacts with oxygen in the atmosphere
• air molecules speed up and collide with the tire walls more often
• air molecules diffuse rapidly through the walls of the tire.

At higher temperatures...

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

If you place a balloon in a freezer what happens to the size of the balloon?

• Doubles
• increases
• decreases
• stays still

Pressure is caused by ______.

• gravity.
• gas molecules colliding with each other.
• gas molecules colliding with surfaces of the container.
• gas molecules reacting with each other.

When volume increases, pressure must...

• Increase

• Decrease