Ideal Gas

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 if you decrease the volume of an ideal gas while keeping the temperature constant?

• the pressure will increase

• the pressure will decrease

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

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

What happens to a real gas at high pressure that makes it become less ideal?

• particles lose energy and so exert less pressure

• particles gain energy and so exert more pressure

• container volume decreases so particles occupy significant volume

• container volume increases so particles occupy significant volume

What happens to a real gas at low temperatures that makes it behave less ideally?

• particles have less energy and so exert less pressure on the container

• particles have more energy and so exert more pressure on the container

• volume of container decreases so particles occupy significant volume

• volume of container increases so particles occupy significant volume

Which of the following is an assumption of the kinetic-molecular theory of gases?

• Collisions between gas particles are inelastic.

• Gases consist of closely spaced particles.

• Gas particles move around in an orderly manner.

• The temperature of a gas depends on the average kinetic energy of the gas particles.

A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory is known as

• real gas

• ideal gas

• imaginary gas

• perfect gas

Under what conditions do real gases behave most like an ideal gas?

• Low temperature and low pressure

• Low temperature and high pressure

• High temperature and low pressure

• High temperature and high pressure

What gases deviate most from ideal behavior?

• polar molecules with small molar masses

• polar molecules with large molar masses

• nonpolar molecules with small molar masses

• nonpolar molecules with large molar masses