The book is intended for anyone wishing to learn chemistry in an easy and fun way. In the journey through the wonderful world of atoms, Branko and Stanko encounter the basic concepts of the science, such as atom, electron, proton, nucleus, neutron, molecule, the periodic table of elements, ion, mass and mole fraction, and much more... In addition, they learn to use the NTC techniques that help them to overcome challenging chemical concepts. The book is aligned with the 7th grade primary school curriculum in such a way that it is also suitable for 5–6 year olds, enabling children to learn chemistry with fun, while it’s also recommended for anyone wishing to master the basics of chemistry in an easy and interesting way. An addition to this book is the board game NTC Codes – The Periodic Table of Elements, through which children can make mental classifications and seriations, while learning about the basic chemical elements and their applications.