HT.2.c Heat vs Temperature

What variable is on the x-axis?

• Time
• Temperature
• Heat
• Phases

What variable is on the y-axis?

• Time
• Temperature
• Heat
• Phases

Why are there parts on the the Phase Change Diagram that are flat?

• Heat energy added goes towards expanding the volume of the substance

• Heat energy added goes towards the kinetic energy to the particles instead of a phase change

• The temperature of a substance will always change as more heat is added.

• Heat energy added goes towards changing the bonds for phase change instead of adding kinetic energy to the particles

On a "heat curve" what increases with time?

• Phase
• Heat
• Loss of Heat

What is the state of the substance at point A?

• Liquid
• Solid
• Gas
• Plasma

What is the state of the substance at point C?

• Liquid
• Solid
• Gas
• Plasma

What is the state of the substance at point E?

• Liquid
• Solid
• Gas
• Plasma

What phase change is happening at point B?

• Vaporization
• Sublimation
• Condensation
• Melting

What phase change is happening at point D?

• Vaporization
• Sublimation
• Freezing
• Melting

If this substance is water, at what temperature is point B?

• -273 degrees C

• 0 degrees C

• 100 degrees C

• 273 degrees C