Book excerpt: The water you drink. The air you breathe. This book you’re holding. Everything around you is made of matter. Learn more about what makes up matter, the forms it can take, and nature’s rules about it. With inexpensive items that you probably have lying around your home, you can do these easy and fun experiments on solids, liquids, and gases. Think like a chemist as you construct a tower of liquids, grow your own crystals, and even measure the speed of smell. Explore the powerful world of matter, from the visible to the invisible.