Sugar/Salt Crystals

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In this chemistry activity (page 1 of the PDF), learners will observe a physical change. By making their own sugar or salt crystals, learners will identify physical changes and see how they can be reversed. Though this activity is included as a pre-visit activity for a workshop about physical and chemical changes, it also is an excellent stand-alone activity.

Quick Guide

Preparation Time:
5 to 10 minutes

Learning Time:
1 to 4 weeks

Estimated Materials Cost:
$1 - $5 per student

Age Range:
Ages 6 - 14

Resource Types:
Activity, Experiment/Lab Activity


Materials List (per student)

  • clear jar or other clear containers
  • popsicle stick or other straight object, long enough to lay across the top of the clear jar/container
  • yarn or rough string
  • hot/warm water
  • sugar and/or salt
  • teaspoon
  • cup
  • windowsill or other location that gets sunlight


  • Physical Sciences
    • Heat and Thermodynamics
      • Heat and Temperature
    • Chemistry
      • Solutions
    • States of Matter
      • Liquids
      • Changes of Phase

Informal Categories

  • Food and Cooking


To use this activity, learners need to:

  • see
  • touch

Learning styles supported:

  • Involves hands-on or lab activities


Includes alignment to state and/or national standards:

This resource is part of:

Access Rights:

  • Free access