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Solubility Science: How Much is Too Much?

Active Time
20-30 minutes
Total Project Time
20-30 minutes
Key Concepts
Chemistry, property of matter, solutions, solubility
Solubility experiment with different salts.

Introduction

Have you ever added a spoon of sugar to your tea and wondered why it disappeared? Where did it go? The sugar did not actually disappear—it changed from its solid form into a dissolved form in a process called chemical dissolution. The result is a tea-sugar mixture in which individual sugar molecules become uniformly distributed in the tea. But what happens if you increase the amount of sugar that you add to your tea? Does it still dissolve? In this science activity, you will find out how much of a compound is too much to dissolve.

Credits

Svenja Lohner, PhD, Science Buddies
This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,200 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.

Materials

  • Distilled water
  • Measuring cup
  • Glasses or cups, 8 oz. (8)
  • Spoons (4)
  • Measuring spoon (1 teaspoon)
  • Epsom salt (150 g)
  • Table salt (50 g)
  • Table sugar (cane sugar) (250 g)
  • Baking soda (20 g)
  • Scale
  • Marker
  • Paper
  • Pen
  • Optional: thermometer
    Materials needed for the solubility activity

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Active Time
20-30 minutes
Total Project Time
20-30 minutes
Key Concepts
Chemistry, property of matter, solutions, solubility