This book on substances and elements from that all of us are and that surround us at every step. Being base on the Periodic system of chemical elements of Д. И. Mendeleyev, in a book told about all known presently chemical elements. you hear about their properties, history of opening and origin of the names, about of genius scientists| about that, how obtain necessary for industry chemical elements and as them a man uses.A book is addressed to the schoolchildren of middle and senior age, contains additional cognitive material to the lessons of chemistry at high school.