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TGA2: Notes on animation on A1.3
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Melting Continued


Notes on the animation showing two lumps of wax melting


The melting point of this candle wax is 64ºC. It is important for students to realise that the lump will only melt when it is hot enough, no matter how big it is. A piece of wax heated to 63ºC will not melt no matter how long it is kept at that temperature. Not even a little bit of it will melt until the temperature reaches 64ºC. In reality, if the wax used is just one kind of molecule, then the temperature would be steady throughout the melting process then would start to rise once all the wax had melted; if there is a mixture, then the temperature would rise as the wax melts.


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