Chemical changes
By: Rebecca L. Johnson
Contributors: National Geographic Society (U.S.)
Series: Physical science; Physical science (National Geographic Society (U.S.))
Publisher: National Geographic Society
Published: 2004
Place of publication: Washington, D.C
Language: eng
Number of pages: 32
Subjects: Chemical reactions -- Juvenile literature.; Chemistry -- Juvenile literature.; Chemical reactions.; Chemistry.
Genres: Juvenile literature.
Description: The student will learn to identify chemical changes and the signs that they have occurred. Introduces how to distinguish between physical and chemical changes, and the concept that chemical reactions involve changes in energy. Identifies factors that affect reaction rate. Explains the role of enzymes in chemical reactions. Describes the importance of chemical reactions in daily life.
Notes: Grades 3-8.
Includes bibliographical references (p. 30) and index.
Table of contents: title: Introduction: clean "green" machines; title: Reaction magic: changing one thing into another; title: Picture this: peeking under the hood; title: Reaction rates: picking up the pace; title: Chemistry in action: putting reactions to work; title: Thinking like a scientist: observing; title: Hands-on science: heating up or chilling out?; title: Science notebook; title: Glossary.