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Exploring Moisture on the Outside of a Cold Cup


Source Institutions

    American Chemical Society

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Exploring Moisture on the Outside of a Cold Cup

In this activity, learners explore the relationship between cooling water vapor and condensation. Learners investigate condensation forming on the outside of a cold cup. To see if the condensed water vapor comes from the air, learners use two cold cups, but limit the air around one of them by placing it in a plastic bag. Learners then compare the amount of moisture that forms on the outside of both cups. They will see that more moisture forms on the exposed cup. Learners will conclude that water vapor from the air must condense to form the moisture on the outside of a cold cup. Use this activity as a followup to "Condensation," an activity from the same resource (see related resources).

Quick Guide


Preparation Time:
5 to 10 minutes

Learning Time:
10 to 30 minutes

Estimated Materials Cost:
1 cent - $1 per group of students

Age Range:
Ages 6 - 14

Resource Types:
Activity, Experiment/Lab Activity

Language:
English

Materials List (per group of students)


  • Ice
  • Room-temperature water
  • 4 Clear plastic cups
  • Paper towel
  • Zip-closing plastic bag, gallon size
  • Student Activity Guide

Subjects


  • Earth and Space Science
    • Earth Structure
      • Atmosphere
  • Physical Sciences
    • Heat and Thermodynamics
      • Heat and Temperature
    • States of Matter
      • Changes of Phase
  • The Nature of Science
    • The Scientific Process
      • Asking Questions
      • Conducting Investigations

Audience


To use this activity, learners need to:

  • see
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other


Components that are part of this resource:

This resource is part of:

Access Rights:

  • Free access

By:

  • Kessler, James H.; Galvan, Patricia M.

Rights:

  • All Rights Reserved, American Chemical Society, ©2007

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