Phase Change Calculations

Gas to liquid

• vaporization

• melting

• condensation

• sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Condensation

• endothermic

• exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

According to the heating curve, when a substance is melting, what is happening to the temperature as energy is continually being added it?

• The temperature is increasing as more energy is being added to melt the substance.

• The temperature stays the same as energy continues to be added to melt the substance.

• The temperature is decreasing as more energy is being added to melt the substance.

• The flat curve indicates a change in the temperature allowing for a change in phase.

Tags

NGSS.MS-PS1-4

At Point A, the beginning of observations, the substance exists in a solid state. Material in this phase has a ____________ volume and ___________ shape.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

At POINT B, the temperature is _______ degrees C.

Tags

NGSS.MS-PS1-4

At POINT C, the substance is completely _____________, or in a ____________ state.

Tags

NGSS.MS-PS1-4

During the time from POINT D to POINT E, the liquid is _____________.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

• Sublimation

• Condensation

• Melting

• Freezing

Tags

NGSS.MS-PS1-4

Which of the following phase changes is endothermic?

• Freezing

• Condensation

• Vaporization

• Deposition

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

During which phase change does a substance release energy?

• Melting

• Vaporization

• Sublimation

• Freezing

Tags

NGSS.MS-PS1-4