Unleash your inner chemist with the Chemistry C500 Chemistry Kit from Thames and Kosmos. This introductory kit teaches the basics about solids, liquids, gases, acids, bases, metals and salts. Junior scientists will learn about carbon dioxide by creating fizzy reactions, write messages with invisible ink and even complete electrochemical experiments with a 9-volt battery (not included). A 48-page color manual is also included to help guide your scientific journey, with step-by-step instructions and explanations for what happened and why in each of the 28 experiments. Gender: unisex.