Build, scan, and identify molecules: the simplest way to learn about atoms, bonding, and chemistry The 17-atom set includes these atoms: 8 H, 3 C, 2 N, 2 O, 1 NA, and 1 cl Includes the free happy atoms app (free download), scanning mat/periodic table poster, and quick start manual A digital and physical chemistry set, tested with teachers and students The app is available for Android, Kindle and iOS devices Parent's Choice silver award winner, kapi award winner for innovation.