The study of density is very important if you sail the high seas! When a liquid is more dense than an object, that object floats. Topics: … Place an egg in a glass of normal tap or fresh water. Density Experiments – Does It Float or Sink? This density experiment with water will do just that. Even if you are not at the beach, you can test the density of salt water for yourself by using water, salt, and eggs. According to the Nova Scotia Department of Agriculture, when an egg is first hatched, the air cell at the large end of the egg will expand as … The egg will sink in regular tap water because the density of the water is less than the density of the egg itself. Having a higher density makes it harder for things to sink and easier for them to float. Enjoy! (Even though it is made out of very dense materials, like steel, most of its volume is actually filled with air, because ships are hollow on the inside. How Does the Floating Egg Science Experiment Work. Eggs don’t always sink in water, however. When you add salt to the water, you increase the density. This is because a raw egg has a greater density than regular tap water. It is an easy one to do even with preschoolers. This lowers the average density.) They may not fully grasp the concept yet, but it is fun to see and do. Essentially, the egg has more matter stuffed into a specific area (volume) than the same amount of water. It’s fun to experiment with various objects to determine if they will sink or float and then to speculate why. Here is a list of nine simple science experiments that deal with density of various objects and liquids. In the Suspended Egg experiment you can see that the egg floats at the top of the salt water layer and rests at … Since water has a density of 1 g/ml, we now know the density of an egg is greater than 1g/ml. Therefore the egg will float in the salt water. The first egg sinks to the bottom of the glass of regular tap water. The Experiment. Adding sale to the water increases it’s density making it more dense than the egg. A ship is built to float because its average density is less than the density of water. I hope you enjoyed the experiment. If you’re doing this with an older kid, it’s a good educational activity to learn about density. Yet another variation would be to submerge the egg after adding only one tablespoon of salt, then two, and three to find the point where the density is high enough to float the egg.