Professor Dave: Phase Changes, Heats of Fusion and Vaporization,

What is the process of going directly from solid to gas called?

• Sublimation

• Evaporation

• Condensation

• Deposition

Tags

NGSS.MS-PS1-4

What is the process called when a gas turns directly into a solid?

• Sublimation

• Deposition

• Boiling

• Melting

Tags

NGSS.MS-PS1-4

At what point does a liquid reach its boiling point?

• When it evaporates completely

• When it reaches a specific temperature regardless of pressure

• When it freezes

• When its vapor pressure equals the atmospheric pressure

What is the normal boiling point of a liquid measured at?

• Two atmospheres

• One atmosphere

• Zero atmospheres

• Half an atmosphere

Why does water boil at a lower temperature at higher altitudes?

• Because of increased atmospheric pressure

• Because of decreased atmospheric pressure

• Because of increased gravitational pull

• Because of decreased oxygen levels

What are the temperatures at which a liquid turns to a solid and a solid melts called?

• Boiling point and freezing point

• Condensation point and sublimation point

• Freezing point and melting point

• Evaporation point and condensation point

Tags

NGSS.MS-PS1-4

What does the heat energy do during a phase change?

• Increases the temperature of the sample

• Decreases the temperature of the sample

• Goes towards disrupting the lattice energy or overwhelming the hydrogen bonds

• Is lost to the surroundings

What is the energy exchanged during melting and boiling called?

• Heat of deposition and heat of evaporation

• Heat of vaporization and heat of sublimation

• Heat of fusion and heat of condensation

• Heat of fusion and heat of vaporization

Tags

NGSS.HS-PS3-4

Why does the line between solid and liquid on a phase diagram for water slant up and left?

• Because of atmospheric pressure

• Because the liquid form is more dense than the solid form

• Because the solid form is more dense than the liquid form

• Because of the unique properties of water

Tags

NGSS.HS-ESS2-5