Internal Energy and Phase Changes

Internal Energy and Phase Changes

Assessment

Interactive Video

Physics, Chemistry, Science

6th - 8th Grade

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial from Free Science Lessons explains the concept of internal energy, which is the total kinetic and potential energy of particles in a system. It discusses how internal energy changes during state transitions such as melting, boiling, condensation, and freezing. The video also covers sublimation, mass conservation during state changes, and the distinction between physical and chemical changes. Finally, it touches on evaporation, where only surface particles of a liquid gain enough energy to become gas.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary difference in particle movement between solids and gases?

Particles in solids vibrate in place, while particles in gases move rapidly.

Particles in solids move rapidly, while particles in gases are stationary.

Particles in solids move around each other, while particles in gases vibrate.

Particles in solids and gases both move rapidly.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What two types of energy contribute to the internal energy of a system?

Nuclear and gravitational energy

Thermal and chemical energy

Kinetic and potential energy

Electrical and magnetic energy

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the internal energy of a solid when it is heated?

It increases and the solid turns into a liquid.

It decreases and the solid turns into a liquid.

It decreases and the solid turns into a gas.

It remains constant and the solid stays the same.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the process called when a liquid turns into a gas?

Freezing

Condensation

Boiling

Sublimation

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the internal energy of a gas when it is cooled?

It increases and the gas turns into a liquid.

It increases and the gas turns into a solid.

It decreases and the gas turns into a liquid.

It remains constant and the gas stays the same.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of sublimation?

Carbon dioxide turning directly into gas

Water turning into ice

Ice melting into water

Water boiling into steam

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is conserved during changes of state?

Volume

Temperature

Color

Mass

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?