Izzy the Inventor and the Unexpected Unicorn (Usborne Books)

Izzy the Inventor LOVES science and does NOT believe in magic. That is until the day her Fairy Godmother appears and sends her to Fairytale Land to rescue Prince Charming from the Mountain of Doom, with an enthusiastic unicorn as her guide. To succeed, Izzy must use her science skills to outwit trolls, goblins, and a bottomless lake of despair, but her quest will also teach her about the power of friendship and that we all need a little magic in our lives...

With actual science experiments!