Explore These Kitchen Science Experiments And Learn How To Power A Clock With An Apple, Make Colour-Changing Concoctions And Discover How To Write Secret Messages. Includes 6 Fun Experiments. Contents: Apple Clock Parts, Purple Potato Powder, Yeast, White Vinegar, Ice Cube Tray, 2 Balloons, 3 Cotton Wool Buds, Mixing Scoop, String, Stickers And Full Colour 16-Page Lab Booklet.