Calculating Heat of FusionThis is a featured page

Heat of fusion

Definition:
The heat of fusion is the heat needed to melt 1 gram of a solid at constant Temperature. The quantity of heat that is absorbed during fusion or melting is released during solidification or freezing.

Formula: H=mHf
Units: Joules per gram and/or calories per gram


Notes/Explanations:
Heat of fusion can be observed if you measure the temperature of waters as it freezes. Whenever people try to caculate the heat of something they could use the formula for heat of fusion. For example when scientist caculate the calories that are in a food item they would take the original weight of the item and heat the item after the item is heated they would recored the mass of the item and would get and overall andser in calories per gram.
The temperature at which heat of fusion occurs is called the melting point. The heat of fusion of water is 79.72 calories per gram or 334 joules per gram.

Everyday Example:

Calculating Heat of Fusion - Interactive Phun Curriculum Calculating Heat of Fusion - Interactive Phun Curriculum
(Solid turning into liquid)

Example: Draw and label the following information in the graph below. Freezing point,solid,liquid, and melting point
Calculating Heat of Fusion - Interactive Phun Curriculum

Whiteboard video

http://www.physchem.co.za/Heat/Latent.htm (Link to other useful websites)


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Latest page update: made by 19855bh , Dec 15 2006, 11:21 AM EST (about this update About This Update 19855bh Edited by 19855bh

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ee19985 Hey 0 Dec 13 2006, 12:41 PM EST by ee19985
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Very good with information, and the pictures are great with the range of colors
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30234ig comment 0 Dec 13 2006, 11:07 AM EST by 30234ig
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Awesome work Ivana!!
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rs19519 yay 0 Dec 13 2006, 10:54 AM EST by rs19519
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great page love the pics
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