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Latent Heat of Fusion Quiz

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Questions and Answers

What is latent heat of fusion?

Energy released during the melting of a solid

Energy required to change a substance from liquid to solid without temperature change (correct)

Energy required to change a substance from solid to gas

Energy required to raise the temperature of a liquid

Why does the temperature remain constant during the solidification of a liquid?

The energy is stored in the molecules as potential energy

The solidification process generates additional heat

The release of latent heat is used entirely for forming bonds (correct)

The heat is absorbed by the surroundings only

What happens to the temperature of a liquid while it is transitioning to a solid?

It continuously decreases until solidification is complete

It fluctuates depending on the external conditions

It remains constant until the entire liquid solidifies (correct)

It briefly increases before decreasing again

What occurs to the energy released during a liquid's solidification?

<p>It aids in the formation of solid bonds</p> Signup and view all the answers

Once the solidification of a substance is complete, what happens to the temperature if more heat is removed?

<p>The temperature will begin to decrease</p> Signup and view all the answers

Study Notes

Latent Heat of Fusion

The heat required to change a substance from solid to liquid (melting) or liquid to solid (solidification) without changing its temperature.

Constant Temperature During Solidification

During solidification, the liquid releases latent heat of fusion, which is used to form bonds between molecules as they transition from liquid to solid state.
This energy release is used specifically for the phase change, not to increase the temperature.
The temperature remains constant until the entire liquid has solidified.

Energy Transfer

As the liquid cools and begins to solidify, it releases heat to the surroundings.
This heat release does not result in a temperature change until the entire liquid has solidified.
Once solidification is complete, further heat removal will lower the temperature of the solid.

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Description

Test your understanding of the latent heat of fusion and the processes involved in the phase change of substances. This quiz covers the concepts of constant temperature during solidification, energy transfer, and the role of heat in these transformations. Challenge yourself to reinforce your knowledge of thermodynamics!