KFYK is a highly visual, accessible and inspirational learning experience. Lively, engaging text explains the basics of a favourite science subject, zooming in on intriguing aspects illustrated with stunning full-colour photographs.KFYK Materials answers the fundamental questions about the matter and materials that make up the physical world: What are rocks made of? Where do plastics come from? Why can I see through glass? Here, readers are introduced to the most common natural and manufactured materials and shown why some are soft, others runny, some stretchy, and others which snap.