What Makes Up an Element?

Periodic Table of the Elements | imageUnderstand the Periodic Table of Elements and you'll understand what's inside everything you see. You don't need to be a NASA scientist to be able to explore the universe at depth when you know the elements.  Even something as simple as water can come in different forms. How can that be? Jefferson Labs has a great approach to understanding the Elements.  Their web site will randomly pick an element and present you with that element's data from the Periodic Table of Elements. Then, you can use that information to answer the question that the computer asks about the number of protons, neutrons, electrons or nucleons (particles in the nucleus) that the atom contains.  Learn more here ...