Can an egg float?
In science we are learning about Properties of Matter. Properties of matter are the ways that we can describe and compare matter.
Some physical properties of matter are: flexibility, absorbency, transparency, hardness, buoyancy, and many others.
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We did a science activity to investigate the properties of:
Solubility - if an object of matter dissolves in liquid, Buoyancy - if an object sinks or floats, and Density - how thick different objects of matter are.
We wanted to see if an egg could become buoyant. Normally they sink, so we wanted to see what would happen if we changed the water they were in.
Changing the density of water
We added salt to the tap water, one teaspoon at a time. Salt is soluble, so it dissolved easily in the water.
After each teaspoon of salt, we put the egg back in to observe the result.
If the egg wasn’t floating, we added another teaspoon of salt and stirred it in. Then we tested the egg again. We recorded each teaspoon of salt that we added.
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Here is a slideshow of our experiment:
Eventually, all the eggs began to float!
Then we recorded the final data, and wrote down why we think the egg began to float.
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