Lesson 7.3 Heating and Cooling Curve Practice + Review

The cooling curve below represents the uniform cooling of a substance, starting at a temperature above its boiling point. During which time interval does the substance exist as both a liquid and a solid?

• min 2 to min 4

• min 4 to min 5

• min 5 to min 7

• min 7 to min 9

Tags

NGSS.MS-PS1-4

The cooling curve below represents the uniform cooling of a substance, starting at a temperature above its boiling point. How many minutes is the substance condensing?

• 2 mins

• 4 mins

• 6 mins

• 9 mins

Tags

NGSS.MS-PS1-4

What type of phase changes occur during fusion?

• Solid to liquid

• Liquid to solid

• Gas to solid

• Solid to gas

Tags

NGSS.MS-PS1-4

What type of phase changes occur during sublimation?

• Solid to liquid

• Liquid to solid

• Gas to solid

• Solid to gas

Tags

NGSS.MS-PS1-4

What is the name for the phase change between liquid and gas?

• Vaporization

• Melting

• Condensing

• Freezing

Tags

NGSS.MS-PS1-4

Temperature is the AVERAGE ___________ in a substance

• kinetic energy

• potential energy

• thermal energy

• nuclear energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which phase has the weakest intermolecular forces?

• Solid

• Liquid

• Gas

A sample of a substance is a liquid at 65°C. The sample is heated uniformly to 125°C. The heating curve for the sample at standard pressure is shown below. What is the boiling point of the sample at standard pressure?

• 65

• 95

• 125

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Starting as a solid, a sample of a molecular substance is heated, until the entire sample of the substance is a gas. The graph represents the relationship between the temperature of the sample and the elapsed time. Which particle diagram represents section AB on the graph?

• 
• 
• 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

Starting as a solid, a sample of a molecular substance is heated, until the entire sample of the substance is a gas. The graph represents the relationship between the temperature of the sample and the elapsed time. Which line segment represents boiling?

• AB

• BC

• CD

• DE

• EF

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4