Mastery Unit 7 - Kinetic Molecular Theory

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

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.

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 particle model diagram represents xenon at STP?

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Tags

NGSS.HS-PS1-3

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

According to kinetic molecular theory, collisions between gas particles in a sample of an ideal gas:

• increase the energy content of the gas sample

• produce strong attractive forces between the gas particles

• result in a net loss of energy by the gas sample

• transfer energy between the gas particles

Tags

NGSS.HS-PS3-2

Under which conditions of temperature and pressure does a real gas 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

A sample of helium gas is in a sealed, rigid container. What occurs as the temperature of the sample is increased?

• The mass of the sample decreases.

• The number of moles of gas increases.

• The volume of each atom decreases.

• The frequency of collisions between atoms increases.

Tags

NGSS.HS-PS3-2

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

• The volume of the particles is considered negligible.

• The force of attraction between the particles is strong.

• The particles are closely packed in a regular, repeating pattern.

• The particles are separated by small distances, relative to their size.

Tags

NGSS.HS-PS2-1

Which particle model diagram represents a sample of neon at 35 K and 1.0 atmosphere?

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Tags

NGSS.HS-PS1-3

NGSS.HS-PS1-5