Eggs have a unique, naturally durable shape designed to keep their contents free from harm. Since eggs are the vessels which young creatures begin their lives within, it is imperative that the egg be able to withstand heavy forces. This fascinating kit allows you to further explore the properties of eggs and learn how an egg reacts in certain situations. Learn about the egg"s air sac that causes it to float a certain way in salty water. See the incredible effects that vinegar can have on an egg shell. Master the art of balancing an egg... and much more! The kit includes six egg-cellent experiments, and all the tools you need to do them... minus the eggs, of course! Have fun learning about one of nature"s wonders!