Elementary Science:
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Floating Eggs?

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Grade Level: Second Grade

Book: Physical Science Unit: Matter Module: Observing Matter

Objective:

To teach student about density by showing that the more dense salt water will make an egg float.

Research Question:

Does an egg float better in freshwater or saltwater?

Materials:

  • Salt
  • 2 clear containers
  • Measuring spoons
  • Stirring spoon
  • Water
  • 2 raw eggs

Experimental Procedure:

  • To begin your floating eggs experiment, fill your two containers with water. Make sure the amounts are equal. 
  • Use the measuring spoons to pour seven tablespoons of salt in the first container of water. Do not put any salt in the second container.
  • Stir the container of water until the salt is completely dissolved. This may take a couple of minutes.
  • Gently place one raw egg in each container.
  • Watch the eggs for a few seconds. What happens?

Related Lesson:

Observing Matter – 20 Questions

 

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