Vapor pressure and boiling

What phenomenon occurs in a closed container where particles continuously transition between vapor and liquid phases?

• Evaporation

• Condensation

• Sublimation

• Freezing

Tags

NGSS.MS-PS1-4

What is the pressure produced when liquid sealed in a closed container vaporizes?

• Atmospheric pressure

• Vapor pressure

• Hydraulic pressure

• Surface tension

What occurs between vapor and liquid in a system of constant vapor pressure?

• Evaporation

• Condensation

• Dynamic equilibrium

• Boiling

What is the definition of boiling point?

• The temperature at which vapor pressure equals external pressure on a fluid

• The temperature at which a liquid turns into a gas

• The temperature at which a solid turns into a liquid

• The temperature at which a gas turns into a liquid

Tags

NGSS.MS-PS1-4

How do temperature and atmospheric pressure affect the boiling point of a liquid in a system of variable vapor pressure?

• Increase the boiling point

• Decrease the boiling point

• Have no effect on the boiling point

• Cause the liquid to freeze

What does the mentioned factor allow for?

• Solidification of gas

• Condensation of gas

• Transitioning gas to liquid state

• Escape of transitioning gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why does water not boil at 70ºC at sea level?

• Because the vapor pressure is greater than atmospheric pressure

• Because the vapor pressure is less than atmospheric pressure

• Because the water is too cold

• Because the water is contaminated

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

• Due to higher atmospheric pressure

• Due to lower atmospheric pressure

• Due to increased humidity

• Due to decreased humidity

What is a key factor in determining water boiling points?

• Temperature

• Pressure

• Volume

• Density

What temperature does water boil at when vapor pressure equals atmospheric pressure at sea level?

• 50ºC

• 75ºC

• 100ºC

• 125ºC