Enthralling continuation of cognitive adventures on the world of chemistry! And if in the first book an author talked about metals and their connections, then more than 45 experiments and experiments, related to gases and crystals, are collected in this collection!Crystals are a surprizing example of natural geometry - it is not so difficult to get independently. Due to recommendations of author you will be able easily to grow the crystal of any form, conduct great number of experiments. you will become acquainted with properties of some gases and their connections, will see reactions showing unique properties of the grown crystals, able to do simple, but spectacle experiments, and even to make happy near unusual "chemical" gifts!Photos, chemical formulas, detailed description of every stage of experience and additional interesting facts about application of properties of elements in the real life - all it will allow to give a glance on chemistry and her transformations quite another eyes! And to try independently to accomplish magic machinations opening the new borders of our consciousness and knowledge about the world!