Sometimes the simplest experiments leave the biggest impression! Introduce young chemists to the Cartesian Diver by having them make one of their own. Use the Diver to further their study of liquids and gases, as well as compression.

For a dramatic illustration of density check out this demonstration. It's simple to do, only requiring a bowling ball and some water.

An experiment to determine if either a regular or a diet can of soda will float or sink when placed in water, and what causes this.

Students investigate with common objects to see if they can make something that neither floats nor sinks, but rather "flinks" in the middle.

In this experiment, you test whether two different bowling balls will float or sink, then determine the density of each of the balls to see if they are less than that of water.

Throughout the activities in this investigation, students may have wondered how a boat made out of steel, which is more dense than water, can float. This activity addresses that question. Students will see that changing the shape of an...

An experiment in buoyancy which involves making raisins float by using carbonated soda pop. Students then try the same test with other materials. Instructions for making one's own carbonated liquid are also provided.

Use a condiment packet as a Cartesian diver to show how pressure changes cause the "diver" to float, sink or hover.

A simple experiment in buoyancy where you discover how to make a packet of sauce or candy float or sink at will, and why you are able to do this.

Learn about density in this hands-on science experiment. Includes full list of materials, procedures, and scientific explanation of what makes an object float or sink. [PDF]