Chemistry Review - Chapter 13 - States of Matter

Which of the assumptions below is NOT accurate according to the Kinetic Theory of gases?

• The motion of gas particles is rapid, constant, and random.

• The particles in a gas are small, hard spheres with an insignificant volume.

• All collisions between gas particles are inelastic.

• The particles are far apart and move independently of each other.

What happens to the movement of particles in a substance at absolute zero?

• The particles have the greatest kinetic energy.

• The motion of particles ceases completely.

• The particles vibrate slowly.

• None of the above.

At what temperature is absolute zero?

• 0 degrees Celsius

• 0 degrees Fahrenheit

• 0 Kelvin

• -273 K

What affects Average Kinetic Energy?

• Boiling Point

• Freezing Point

• Phase Diagrams

• Temperature

What are the standard conditions (STP) when working with gases?

• 0 K ; 1 atm

• 0 degrees Celsius ; 101.3 kPa

• 0 K ; 760 mm Hg

• 0 degrees Celsius ; 100 atm

What causes gas pressure?

• Temperature

• The amount of a gas present

• Rapidly moving particles in a gas colliding with an object

• The size of the gas particles

The pressure of 120 mm Hg is equivalent to:

• .158 kPa

• .158 atm

• 120 atm

• 120 kPa

What information can you find on a phase diagram?

• conditions where a substance exists as a solid, liquid, and gas

• the volume of the gas

• the mass of the solid

• the mass of the gas

What occurs when you increase the temperature of a contained liquid?

• no change in average kinetic energy

• the mass of the gas increases

• less particles are able to escape the surface of the liquid

• the vapor pressure above the liquid increases

Which statements are true according to the Kinetic Theory?

• There are attractive forces between particles in a liquid but none in a gas

• All particles are in constant motion of all substances unless at absolute zero

• Gas particles encounter perfectly elastic collisions with one another

• All of the above