3Why do yellow lemons float and green ones sink? Can you clean coins with a lemon? How can I write a secret message with your juice? These questions and many more find their answers in this lemon activity book. Each double page proposes experiments with common materials in the kitchen that will lead the reader to discover concepts such as the parts of a lemon, the chemical reactions that cause calcium to dissolve or cut milk, its antioxidant properties or how to best squeeze them. Thus, this simple text, accompanied by charming illustrations, becomes a laboratory within everyone's reach.