Podcast
Questions and Answers
What is the term used to describe the energy required to change the phase of a sample of mass 𝑚?
What is the term used to describe the energy required to change the phase of a sample of mass 𝑚?
- Bonding energy
- Heat of condensation
- Latent heat of fusion (correct)
- Heat of sublimation
During condensation, what happens to the energy that was needed to overcome molecular attraction in the gas phase?
During condensation, what happens to the energy that was needed to overcome molecular attraction in the gas phase?
- It is increased
- It is released (correct)
- It remains the same
- It is reduced
Which term describes the energy needed to change a substance from liquid to vapor?
Which term describes the energy needed to change a substance from liquid to vapor?
- Latent heat of vaporization (correct)
- Heat of sublimation
- Activation energy
- Heat of fusion
What is the term for the process where a substance changes directly from solid to gas without passing through the liquid phase?
What is the term for the process where a substance changes directly from solid to gas without passing through the liquid phase?
The heat necessary for a phase change depends on which two major factors?
The heat necessary for a phase change depends on which two major factors?
What is the unit used to measure latent heat?
What is the unit used to measure latent heat?
What is the reason why energy is required to melt a solid?
What is the reason why energy is required to melt a solid?
During which phase change is there no temperature change observed?
During which phase change is there no temperature change observed?
Which term refers to the energy required for a substance to change from solid to liquid?
Which term refers to the energy required for a substance to change from solid to liquid?
What is the process where a solid changes directly into a gas without passing through the liquid phase?
What is the process where a solid changes directly into a gas without passing through the liquid phase?
Why are latent heats called 'latent'?
Why are latent heats called 'latent'?
What happens to the temperature of a cup of soda initially at 0℃ until all the ice has melted?
What happens to the temperature of a cup of soda initially at 0℃ until all the ice has melted?
What is the term for the process in which a substance goes directly from solid to gas?
What is the term for the process in which a substance goes directly from solid to gas?
What is released during freezing and condensation?
What is released during freezing and condensation?
If frost forms on a very cold window, what kind of phase transition is occurring?
If frost forms on a very cold window, what kind of phase transition is occurring?
Which statement correctly describes why energy is needed to vaporize a liquid?
Which statement correctly describes why energy is needed to vaporize a liquid?
Which phase transition involves the release of energy speeding the melting of ice?
Which phase transition involves the release of energy speeding the melting of ice?
Why do solid-to-vapor direct transitions occur?
Why do solid-to-vapor direct transitions occur?
