Heat and Phase Changes

____________ is the process by which a gas changes to a liquid.

• sublimation
• boiling
• freezing
• condensation

Tags

NGSS.MS-PS1-4

_____________ is a dynamic condition in which two opposing changes occur at equal rates in a closed system.

• equilibrium vapor pressure

• sublimation

• equilibrium

• volitile liquid

Tags

NGSS.HS-PS1-5

The conversion of a liquid to a vapor within the liquid as well as at its surface; occurs when the equilibrium vapor pressure of the liquid equals the atmospheric pressure is _________.

• boiling

• freezing

• melting

• vaporizing

Tags

NGSS.HS-PS3-4

The temperature at which a solid and a liquid are in equilibrium at 1 atm pressure is the _______

• boiling point

• freezing point

• condensing point

• melting point

Tags

NGSS.HS-PS3-4

________ is the change of state from a gas directly to a solid.

• sublimation

• deposition

• condensation

• evaporation

Tags

NGSS.MS-PS1-4

_____________ shows a graph of pressure versus temperature.

• bromine diagram

• water diagram

• phase diagram

• equilibrium diagram

The temperature and pressure conditions at which the solid, liquid, and vapor of a substance can coexist  at equilibrium is ______

• critical point
• triple point
• double point
• critical pressure point

______ indicates the critical temperature and critical pressure of a substance.

• triple point
• critical temperature
• critical pressure
• critical point

The temperature above which a substance cannot exist in the liquid state is _________.

• critical temperature

• critical pressure

• temperature

• pressure

How are solids different from liquids?

• particles in solids are moving freely around each other.
• particles in solids have no motion.
• particles in solids are vibrating in place.
• particles in solids have more motion than in liquids