Exploring Phase Changes and Heating Curves

The video tutorial explains phase changes between solid, liquid, and gas states, focusing on the heating curve of H2O. It covers key phase transitions like melting, freezing, evaporation, and condensation, and introduces sublimation and deposition. The tutorial emphasizes the importance of constant temperatures during phase changes and explains the energy dynamics involved.

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

• Freezing

• Evaporation

• Sublimation

• Condensation

Which phase change occurs when a solid turns into a liquid?

• Freezing

• Condensation

• Melting

• Sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

At what temperature does water boil under normal conditions?

• 150 degrees Celsius

• 50 degrees Celsius

• 100 degrees Celsius

• 0 degrees Celsius

Why is it more dangerous to be burned by steam than by boiling water?

• Steam is less dense

• Steam has a lower energy level

• Steam is colder than boiling water

• Steam is hotter than boiling water

Tags

NGSS.MS-PS3-5

What happens to the temperature of a substance during a phase change?

• It remains constant

• It decreases

• It fluctuates

• It increases

Tags

NGSS.MS-PS1-4

What is the term for the direct change from a solid to a gas?

• Condensation

• Melting

• Sublimation

• Freezing

Which of the following is an example of sublimation?

• Condensation on a cold surface

• Dry ice turning into gas

• Boiling water

• Melting ice

Tags

NGSS.MS-PS1-4

What is deposition in terms of phase changes?

• Gas to liquid

• Gas to solid

• Liquid to solid

• Solid to gas

Tags

NGSS.MS-PS1-4

Which phase change occurs when a liquid turns into a gas?

• Vaporization

• Freezing

• Condensation

• Sublimation

Tags

NGSS.MS-PS1-4

What is the term for the energy required to change a substance from one phase to another?

• Potential energy

• Enthalpy

• Kinetic energy

• Thermal energy

Tags

NGSS.MS-PS1-4