by Edward Applewhite
Jack, ten years old and alone in his bedroom is not happy. There’s a science test at school tomorrow and he’s very worried. This week it’s all about matter, changes of matter, and the water cycle along with so many big words he doesn’t understand like elements and evaporation and condensation. There’s only one thing for it: he’s going to have to call on his scientist friends the Catalysts, they helped him last time – can they do it again?