From the tiniest specks of dust to entire planets, everything is made of matter.A True Book: Physical Science allows readers to find answers to puzzling questions as well as discover how people have used physical science to make countless innovations throughout history. This series includes an age appropriate (grades 3-5) introduction to curriculum-relevant subjects and a robust resource section that encourages independent study.Readers will learn about the properties of matter, from the forms it can take to its structure. They will also find out how scientists study matter and how different types of matter interact with each other. Intriguing experiments provide real-world examples on how changes in matter affect our surroundings.