Latent Heat and Phase Changes

The video tutorial explains the concept of latent heat of fusion, focusing on the energy required to convert ice into water. It discusses the differences in intermolecular bonds between ice and water, the energy needed for phase change, and the temperature vs heat addition graph. The process of fusion and melting is detailed, and the definition and value of latent heat of fusion are provided. The video concludes with a call to action for viewers to engage with the channel.

What is the main difference between the intermolecular bonds in ice and water?

• Both have the same strength of bonds.

• Water has stronger bonds than ice.

• Ice has stronger bonds than water.

• Ice has weaker bonds than water.

What is required to convert solid ice into liquid water?

• Decrease in temperature

• Increase in pressure

• Energy to break intermolecular bonds

• Addition of more ice

What does the temperature vs heat addition graph illustrate?

• The process of converting ice to water

• The boiling point of water

• The decrease in temperature of ice

• The increase in temperature of water

What is the state of ice at the beginning of the temperature vs heat addition graph?

• Solid

• Gas

• Liquid

• Plasma

During the heat of fusion process, what remains constant?

• Temperature only

• Pressure only

• Both temperature and pressure

• Neither temperature nor pressure

What happens to the temperature during the conversion of ice to water?

• It increases

• It decreases

• It remains constant

• It fluctuates

What is the process of converting ice into water called?

• Condensation

• Sublimation

• Freezing

• Fusion or melting

What is the specific heat during the fusion process treated as?

• Negative

• Infinity

• Zero

• Constant

How is latent heat of fusion defined?

• Heat required to freeze water

• Heat required to evaporate water

• Heat required to convert ice to water at constant temperature

• Heat required to boil water

What is the value of latent heat of fusion for ice?

• 100 Joule per kg

• 500 Joule per kg

• 200 Joule per kg

• 334.50 Joule per kg