Intermediate Chemistry Kit from Thames & Kosmos CHEM C2000 is a complete introduction to the most important topics in chemistry. Discover how fascinating the world is when you know the chemistry behind how everyday things work. Understanding chemical reactions turns the ordinary occurrences around us into remarkable events. You will start with fun experiments to learn basic chemistry principles. Build a mini fire extinguisher and float a soap-powered boat. Write with invisible ink and test colored markers on the chromatography racetrack. Contains 251experiments.