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experiment #1 – Melting point

experiment #1 Melting pointDefinitionWhen a solid substance is heated, typically it will melt; that is to say, at sometemperature the solid will begin to liquify and by some slightly higher temperature all of thesolid will have become liquid. The Melting point (actually Melting point range) of acompound is then defined as the temperature at which an observer can first see liquidforming from the solid to the temperature where the last particle of solid has become example, the Melting point of pure sucrose (table sugar) is 185o-186oC. This means thatas a small sample of sucrose is slowly heated some of the crystals begin to liquefy at 185oand all of the crystals have become liquid by 186oC. Sometimes only the second number(completely melted) is reported as the Melting point .

Experiment #1 Melting Point Page 2 Figure 1 - Melting Point Using Thiele Tube Filling the Capillary Tube Make sure the sample is dry. [This is not an issue in this experiment, but in the future you will want to determine the melting point of a solid you have just separated from a liquid by filtration.

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