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The effect of salt and sugar on the freezing point of waterFeatured science projectScience project video

Observation

The results show that adding more sugar or salt to the solution will lower its freezing point.

 

Solute used Freezing point of solution (°C)
l 0.5 mol 1.0 mol 1.5 mol 2.0 mol
Salt -1.8 -3.6 -5.5 -7.4
Sugar -1 -1.9 -3.1 -4.1

The above results were then plotted onto a graph, as shown below.

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Complexity level:
6
Project cost ($):
10
Time required:
1 day for preparation, 5 hours for experiment
Material availability:
Easily found
Safety concerns:

None