How to Make an Egg Float
Question: Eggs sink in water, but will an egg float in salt water?
Hypothesis: Adding salt to water will make the water more dense so that an egg will not sink but float
Materials:
Glass of water
Egg
Salt
Spoon
Glass of water
Egg
Salt
Spoon
Procedure:1. Take a glass of water 2. Add an egg 3. See if it sinks or floats 4. Remove the egg 5. Add 1 tsp of salt and stir to dissolve 6. Add the egg 7. See if the egg sinks or floats Repeat 4-7 Special Needs: Water Sink |
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The Science Behind it
When you add salt to water, the salt dissolves and the water becomes more dense. That means the water becomes heavier. Eggs are usually heavier than water, so they sink. When you add enough salt, the water is more dense than the egg, so the egg floats.
Conclusion
We accept our hypothesis. The egg sinks in water and floats in salt water. This is because salt water is more dense then water.
About Author 1Emma Rose loves playing soccer and spending time with her family.
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Author 2Katrina loves drawing and playing with her 2 rabbits
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