kinetic theory of gases

Multiple Choice

Which best describes a solid?

• The state of matter that has a fixed shape and fixed volume

• The molecules of a solid move with a high speed in random order

• The state of matter that has a fixed volume and takes the shape of its container

• Molecules move past one another, vibrate, and rotate

Multiple Choice

Which state of matter is shown?

• sold

• liquid

• gas

• plasma

Multiple Choice

Which is an assumption of the kinetic theory of gases?

• Gas are made up of particles that move at a constant, random motion

• Gases can be compressed

• Evaporation is a state change

• When particles of a gas collide a large amount of energy is lost

Multiple Choice

Which is FALSE about melting?

• solid change to a liquid

• particles gain enough energy to move past each other

• the heat of fusion is needed to melt a solid

• the heat of vaporization is needed to melt a solid

Multiple Choice

Which state is shown.

• gas

• solid

• liquid

• plasma

Multiple Choice

Which part of the graph has no temperature change

• The part labeled ice

• The part labeled freezing/melting

• The part labeled water

• The part labeled gas

Multiple Choice

Most matter __________ when heated

• condenses

• solidifies

• contracts

• expands

Multiple Choice

What occurs when the vapor pressure of a liquid equals the atmospheric pressure?

• condensation

• freezing

• melting

• boiling

Multiple Choice

What happens to KE when the temperature increases?

• Nothing

• It increases because particles move faster

• It decreases because particles slow down

Multiple Choice

Why does the balloon shrink in liquid nitrogen?

• The particles move apart and speed up

• The particles slow down and move closer together since the temperature decreases.

• Balloon shrink in all liquids

• The liquid nitrogen damages the balloon.

Multiple Choice

Which state of matter is shown?

• gas

• liquid

• solid

• plasma

Multiple Choice

This state has the lowest amount of energy. The particles mainly vibrate.

• gas

• solid

• liquid

• plasma

Multiple Choice

According to the kinetic molecular theory, all collisions between gas molecules are inelastic; all kinetic energy is lost.

• True

• False

Multiple Choice

Liquid changing to a gas just at its surface.

• condensation

• evaporation

• melting

• boiling

Multiple Select

What is true about an amorphous solid?

• It does not have a melting point- it has a range of temperatures at which it melts

• It behaves like all other solids

• Glass and butter are examples

Multiple Choice

What is sublimation?

• changing from a solid to a vapor

• vapor changes to a solid

• vapor changes to a liquid

• liquid changes to a solid