States of Matter

All of the following are properties of ideal gases except:

• Gas molecules do not interact with each other except during collisions

• Collisions between gas molecules are completely elastic

• Volume occupied by molecules is negligible compared to the volume occupied by the gas

• Small amounts of energy are lost during collisions between gas molecules

The temperature of a gas depends on the average __________ of the particles of the gas.

• kinetic energy

• pressure

• volume

• molecular weight

What two assumptions from the Kinetic Molecular Theory explain why gas expands?

• -Gas particles move rapidly in all directions

  &

  -Do not have significant attraction to one another

• -Gas particles move rapidly in all directions

  &

  -Temperature depends on kinetic energy of the particles

• -Gas particle collisions are elastic

  &

  -Temperature depends on kinetic energy of the particles

• -Gas particle collisions are elastic

  &

  -Do not have significant attraction to one another

What accounts for the fluidity of gases?

• Gas particles have low IMF so they glide past one another

• Gas particles move rapidly in all directions

• Gas particles are in constant rapid motion

• Gas particles have elastic collisions

What accounts for the low density of gases (about 1/1000th the density of the same substance in a liquid or solid state)?

• The large distance between the particles in a gaseous state

• The size of the gas particles

• The rapid movement of gas particles

• The fluidity of gas particles

Why are gases so easy to compress?

• Because their particles are so far apart, there is a lot of empty space between them

• B

• C

• D

When a gas is compressed, its volume is _______ ________

• greatly increased

• greatly decreased

• not affected because it is a gas

• negligible

The spontaneous mixing of the particles of two substances caused by their random motion

• Diffusion

• Effusion

• Fluidity

• Expansion

A process by which gas particles pass through a tiny opening

• Diffusion

• Effusion

• Fluidity

• Elasticity

What is the relationship of gas velocity and effusion rate?

• As the velocity increases, the effusion rate increases

• As the velocity increases, the effusion rate is constant

• As the velocity increases, the effusion rate decreases

• As the velocity decreases the effusion rate increases