Effect of Solutes on Boiling Point

This Effect of Solutes on Boiling Point lab resource also includes:

Anyone that lives around snow knows that adding salts to water increases its melting point. Are there solutes that affect the boiling point as well? A scientific experiment has learners add different solutes to water and then monitor the boiling point of the solution. Groups compare their results and make conclusions from the data.

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Instructional Ideas

  • Have learners make predictions prior to the activity
  • Follow the activity with a discussion of the results and their real-world implications
Classroom Considerations

  • Expects a solid understanding of molecule interactions at phase changes

  • Incorporates technology probes for data collection
  • Uses easily obtainable materials

  • None