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How Can You Make an Egg Float?

Time Frame:
1 class period that runs 30 minutes.

Group Size:


Students at home will discover how much salt it will take to make a hard boiled egg float.

Main Curriculum Tie:
SEEd - Grade 6 (2017)Strand 6.2: Energy Affects Matter
Matter and energy are fundamental components of the universe. Matter is anything that has mass and takes up space. Transfer of energy creates change in matter. Changes between general states of matter can occur through the transfer of energy. Density describes how closely matter is packed together. Substances with a higher density have more matter in a given space than substances with a lower density. Changes in heat energy can alter the density of a material. Insulators resist the transfer of heat energy, while conductors easily transfer heat energy. These differences in energy flow can be used to design products to meet the needs of society.


  • one hard boiled egg
  • glass of water
  • tablespoon
  • one to two cups of salt
  • worksheet


Student Prior Knowledge:
density, experimental procedures

Instructional Procedures:

  1. Students will, with parents supervision, hard boil an egg.
  2. They will let it cool, put it into a glass of water.
  3. Add salt one tablespoon at a time and stir until the egg floats.
  4. This is to be an inquiry lab. Do not give them these exact instructions. You many want to save a couple of the questions for the next day. They should be good at setting up and recording experiments at this point.

Assessment Plan:
Check for amount of water and salt. Bring to the students attention that the amount of salt depended upon the amount of water.

Lesson Design by Jordan School District Teachers and Staff.

Utah LessonPlans

Created Date :
Sep 30 2014 09:40 AM