Critical Point

When the gas can’t be liquified, some will be stay as gas

• Sublimation

• Deposition

• Equilibrium

• Critical Point

Tags

NGSS.HS-PS3-4

The critical point is found at point.....

• A

• B

• C

• D

What happens along the BC line?

• Melting/Freezing

• Boiling/Condensing

• Boiling/melting

• freezing/condensing

Tags

NGSS.MS-PS1-4

At what point does a substance exhibit properties of both liquid and gas phases simultaneously?

• Triple Point

• Boiling Point

• Critical Point

• Melting Point

Which of the following best describes the critical point in a phase diagram?

• The temperature and pressure at which solid, liquid, and gas phases coexist

• The temperature and pressure at which liquid and gas phases become indistinguishable

• The temperature and pressure at which a substance melts

• The temperature and pressure at which a substance freezes

What happens to the surface tension of a liquid as it approaches its critical point?

• Increases

• Decreases

• Remains constant

• Becomes zero

Which of the following is true about the critical point of water?

• It occurs at 0°C and 1 atm

• It occurs at 100°C and 1 atm

• It occurs at 374°C and 218 atm

• It occurs at 273°C and 1 atm

In a phase diagram, what does the critical point represent?

• The end of the liquid-gas boundary

• The start of the solid-liquid boundary

• The midpoint of the solid-gas boundary

• The intersection of all phase boundaries

What is the significance of the critical point in supercritical fluid extraction?

• It allows the separation of solid and liquid phases

• It enables the use of a substance as a solvent with unique properties

• It marks the point where a substance becomes a solid

• It is irrelevant to supercritical fluid extraction

Which property of a substance becomes identical for both liquid and gas phases at the critical point?

• Density

• Viscosity

• Color

• Boiling point