What are the four states of matter? What happens when a substance changes state? Why is water different from many other liquids? This title explores how elements change from one state to another, how the water cycle works, and how changes of state are used in our everyday lives. You will also find several experiments that can be done at home.

The States of Matter series looks at important topics in chemistry such as solids, liquids and gases, changes of state, the water cycle, and mixing solids, liquids and gases. There are seven informative experiments that can be carried out at home, and useful diagrams, including the periodic table.