Phase Changes and Energy Calculations

The video tutorial explains the phase changes of water, including melting, freezing, vaporization, condensation, and sublimation. It discusses the energy required for each process and how atoms behave during these changes. The tutorial also provides instructions for completing a Nearpod activity and a lab, emphasizing the importance of understanding these concepts for the tasks.

What is the term used for the process of changing from a solid to a liquid?

• Condensation

• Freezing

• Sublimation

• Melting

How much energy is required to melt 1 gram of ice?

• 500 joules

• 100 joules

• 260 joules

• 334 joules

What happens to the energy during the freezing process?

• Energy is gained

• Energy is doubled

• Energy is released

• Energy remains constant

What is the process of changing from a liquid to a gas called?

• Condensation

• Vaporization

• Freezing

• Sublimation

How much energy is required to vaporize 1 gram of water?

• 334 joules

• 260 joules

• 2260 joules

• 1000 joules

What is the term for the process of changing from a gas to a liquid?

• Freezing

• Sublimation

• Melting

• Condensation

What is sublimation?

• Gas to liquid

• Solid to gas

• Liquid to gas

• Solid to liquid

How much total energy is required for sublimation of 1 gram of dry ice?

• 1000 joules

• 2260 joules

• 334 joules

• 2594 joules

What is the sum of energy required for melting and vaporization?

• 1000 joules

• 2260 joules

• 334 joules

• 2594 joules

What should students do after watching the video?

• Start the lab

• Contact the teacher

• Review the video

• Finish the Nearpod