This is an unbelievably FUN experiment. It is always one of the highlights of my students' year. They constantly refer to this experiment and ask if we can do it again!
Students complete the experiment by dropping an egg into freshwater and then dropping an egg into salt water. They observe that the egg will sink in freshwater and float in salt water. Why? DENSITY!
The best part of this experiment is combining the 2 cups and watching what happens! It's like MAGIC! :)