Zometool Molecular Mania Science Kitexplains how all the known atoms are categorized in the Periodic Table of the Elements. Even though there are over 100 different elements, most of the molecules in the world are made from only a handful of these atomic building blocks. In particular, life molecules are composed mainly of carbon (C), hydrogen (H), oxygen (O) and nitrogen (N) atoms. You will learn to use atoms as building blocks to make models of many of your favorite molecules, starting with water (H2O), oxygen (O2) and carbon dioxide (CO2). Atoms are the building blocks of the universe, when two or more atoms are connected, or bonded together, a molecule is formed. Most of the molecules in the world are made from only a handful of these atomic building blocks. In particular, life molecules are composed mainly of carbon (C), hydrogen (H), oxygen (O) and nitrogen (N) atoms. Build 28 important molecules using atoms as your building blocks! The Molecule Cards in this kit have all the information needed to make a particular molecule.Ages 6 and up.* Parents’ Choice Approval Award and one of Parenting Magazine’s Best Toys of the Yearby Zometool