Take a look around. What do you see?
What you see is a lot of matter. In fact, everything you see (and some things you don’t see) is matter! If an object has weight (if you can put it on a scale and assign a number to it) and takes up space (if nothing else can be put exactly where it is) than that object is matter. In this book we’ll examine three states of matter–solid, liquid and gas–and discover their characteristics and properties. You will see how we group things according to their properties by doing some experiments and demonstrations. And you’ll see how things can change from one state of matter to another–and sometimes back again.
It’s all matter. And it all matters!