Science Projects With Salt to Float an Egg
Eggs are for more than eating. With just salt and water, eggs can turn into fun science projects. There are different science projects using salt, water and a raw egg. With enough salt, you can float eggs on top of the water, suspend them in the middle of a glass of water or even make them rise through several inches of water.
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Floating Egg
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This experiment is very simple and does not require many materials. Materials include one raw egg, a tall clear glass or vase, kosher salt and water. Start by filling the glass three quarters full of water. Try floating the egg in plain tap water. Then add salt. Try floating the egg in different amounts of salt and water. It should take two tablespoons of salt per one cup of water. The salt in the water helps the egg float.
Swimming Egg
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This experiment is simple but may require a few tries. Materials include a raw egg, a clear vase or glass, water and kosher salt. Fill the vase half full of salt water. Then slowly add tap water by trickling it against the side of the glass so that is does not mix with the salt water. Add the egg. The egg should sink through the tap water but float on top of the salt water.
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Rising Egg
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This experiment takes a few days to produce results. Materials include an egg, a clear glass or vase, salt and water. Fill the vase one fifth full of salt. Then add just enough water to wet the salt. Add more water by trickling it against the side of the vase so it does not mix with the salt. Fill the vase three quarters full with water. Add the egg. Set the vase where is will not be disturbed and watch. As the salt dissolves in the water, the egg will rise. Use a marker to mark how much the egg has risen.
Types of Salt
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Materials include at least two different types of salt, water, raw egg and a clear vase or glass. Fill the vase with water and mix in four tablespoons of the first type of salt. Add the egg. If the egg will not float add more salt until it floats. Repeat the process for each type of salt. Record the type of salt and how much salt it took to float the egg.
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References
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