Atoms are so small that there are millions and billions and trillions in the tiniest speck you can see. Solids, liquids, gases-all matter-are made up of atoms (or other things, like molecules, that are made from atoms)! ELEMENTS are the kinds of atoms that we can have.Carbon is an element, hydrogen is an element, and so is oxygen. (We can call them by their names, or by their symbols-C for carbon, H for hydrogen, and O for oxygen.) All the elements are listed out in a periodic table.If it's in the table, it's an element!toms are so small that there are millions and billions and trillions in the tiniest speck you can see. Solids, liquids, gases-all matter-are made up of atoms (or other things, like molecules, that are made from atoms)! ELEMENTS are the kinds of atoms that we can have.