Explains what a liquid is and includes experiments that demonstrate it.

Learn about liquids and discover what happens if you try to squash water, hot to turn a liquid into a solid, and why syrup doesn't flow as fast as water.

Describes the properties of solids, and answers such questions as "What can turn some solids into liquids?" and "Can a solid mix with a gas?"

How do tiny bugs get into oatmeal? What makes children look like-- or different from-- their parents? Where do rotten apples go after they fall off the tree? By