Float Or Sink Egg Test

The float or sink egg test is a simple and fun way to demonstrate the principles of buoyancy and density. It's a great activity for kids of all ages, and it can be used to teach them about the different properties of different objects.

To do the test, you will need the following materials:

1 raw egg
1 glass of water
1 tablespoon of salt

Instructions:

Gently place the raw egg into the glass of water.
Observe what happens. Does the egg float or sink?
Add 1 tablespoon of salt to the water and stir until dissolved.
Gently place the egg back into the saltwater.
Observe what happens. Does the egg float or sink?

The egg will float in the water because the density of the egg is less than the density of the water. The density of an object is a measure of how much mass it has for its size. The denser an object is, the more mass it has for its size.

When you added salt to the water, you increased the density of the water. This is because the salt molecules take up space in the water, which makes the water less dense. As a result, the egg now has a higher density than the water, and it sinks.

This experiment can be used to teach kids about the different properties of different objects. It can also be used to teach them about the principles of buoyancy and density.

Here are some additional tips for doing the float or sink egg test:

Use a fresh egg for the test. Older eggs may not float as well because they have lost some of their moisture.
Be careful not to crack the egg when you are placing it in the water.
If the egg does not float, you can add more salt to the water until it does.
You can also try the test with other objects, such as a ball, a piece of wood, or a metal spoon.
The float or sink egg test is a great way to teach kids about science. It's a simple and fun activity that can be used to teach them about the different properties of different objects and the principles of buoyancy and density.