Heat Transfer and Phase Changes

Heat Transfer and Phase Changes

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains the energy involved in phase changes, using a graph to illustrate the process of heating a substance from solid to vapor. It covers the concept of plateaus where temperature remains constant during phase changes and introduces formulas for calculating heat, including Q = MC delta T, heat of fusion, and heat of vaporization. An example is provided to demonstrate the step-by-step calculation of heat required to convert ice at -12°C to steam at 245°C, emphasizing the need to consider different specific heat capacities at each phase.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the initial section of the graph represent in a phase change diagram?

Solid phase

Liquid phase

Vapor phase

Gas phase

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During a phase change, what happens to the temperature of the substance?

It fluctuates

It remains constant

It decreases

It increases

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula is used to calculate heat during a temperature change?

Q = MC delta T

Q = M delta T

Q = delta T

Q = C delta T

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the heat of fusion for water?

2.1 K per mole

40.7 K per mole

4.184 K per mole

6.0 K per mole

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the specific heat capacity of steam?

2.1 Jew per G de C

4.184 Jew per G de C

1.7 Jew per G de C

3.0 Jew per G de C

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example problem, what is the first step in converting ice to steam?

Calculate heat for vaporization

Calculate heat for temperature change of steam

Calculate heat for melting

Calculate heat for temperature change of ice

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many moles of water are used in the example problem?

0.555 moles

1.0 moles

0.75 moles

0.25 moles

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?