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

Tags

NGSS.HS-PS3-2

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.

Tags

NGSS.HS-PS3-2

Which condition is necessary for most gases to behave nearly ideally?

• high pressure

• high temperature

• low compressibility

• low expansion

Which of the following is not a physical property of gases?

• absence of definite volume

• high density

• high compressibility

• fluidity

The pressure exerted by a gas does not depend on

• temperature.

• volume.

• number of moles present.

• the identity of the gas.

According to the kinetic molecular theory, ideal

gas particles

• are separated by small distances relative to their size

• do not transfer energy when they collide with each other

• have attractive forces between them

• move in random, constant, straight-line motion

According to the kinetic molecular theory, which statement explains why an ideal gas can be compressed to a smaller volume?

• The motion of the gas particles is circular and orderly

• The force of attraction between the gas particles is strong.

• As the gas particles collide, the total energy of the system decreases.

• The gas particles are separated by great distances relative to their size.

Under which conditions of temperature and pressure does a sample of propane behave least like an ideal gas?

• 250. K and 1.0 atm

• 250. K and 5.0 atm

• 500. K and 1.0 atm

• 500. K and 5.0 atm

Which statement describes the particles of an ideal gas, based on the kinetic molecular theory?

• There are attractive forces between the particles.

• The particles move in circular paths.

• The collisions between the particles reduce the total energy of the gas.

• The volume of the gas particles is negligible compared with the total volume of the gas.

Which phrase describes the motion and attractive forces of ideal gas particles?

• random straight-line motion and no attractive forces

• random straight-line motion and strong attractive forces

• random curved-line motion and no attractive forces

• random curved-line motion and strong attractive forces