You can't make something out of nothing. This is because there are certain laws that everything in the universe follows. It may seem like magic, but it's really a matter of matter. Join physicists from past and present to uncover the magic of how matter changes yet remains the same in this physical science e-book. Fifth-grade readers will learn about physical and chemical changes; how mass, energy, and volume are related; discoveries that led to the law of conservation of mass, scientific words such as hypothesis, theory, and law; and more through this high-interest informational text filled with vibrant photographs. Aligned to the Next Generation Science Standards, a hands-on "Think Like a Scientist" lab activity and a "Your Turn" page at the end of the e-book support STEM Education and provide young scientists with an opportunity to apply what they've learned in the text. Helpful diagrams and text features, such as a glossary and index, are also included to reinforce content-area literacy and improve close reading.