Phase Changes Enthalpy

The changes in ice to water involve

• and absorption of heat and an increase in entropy

• a release of heat and an increase in entropy

• a release of heat and a decrease in entropy

• an absorption of heat and a decrease in entropy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following processes has a negative △S

• evaporating 1 mol of a liquid

• freezing 1 mol of a liquid

• raising the temperature of 1 L of water from 295 K to 350 K

• None of the other answer are correct.

Change from gas to liquid...

• condensation

• evaporation

• deionization

• sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What phase of matter exists in part C of the graph?

• Gas

• Liquid

• Solid

• Plasma

Tags

NGSS.MS-PS1-4

What phase of matter exists in part E of the graph?

• Gas

• Liquid

• Solid

• Plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What phase change occurs when you start at D and end at E?

• Freezing

• Melting

• Condensing

• Vaporization

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What phase change occurs when you start at D and end at C?

• Freezing

• Melting

• Condensing

• Vaporization

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What phase change occurs when you start at E and end at D?

• Freezing

• Melting

• Condensing

• Vaporization

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What phase change occurs when you start at C and end at D?

• Freezing

• Melting

• Condensing

• Vaporization

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

On which parts of the graph does the temperature remain the same?

• Between C and D

• Between D and E

• At C, D, or E

• On both flat sections

Tags

NGSS.MS-PS1-4