GRADES 5 - 8
WATER INTO GAS

OBJECTIVES: Students are introduced to the concepts of liquids and gases. Students learn how temperature and pressure can cause a material to change phase. Students and teacher will heat water to reclaim a gas. Students demonstrate that different liquids evaporate at different temperatures. Students are introduced to basic thermodynamics in Mechanical Engineering through a discussion of phases and a hands-on activity. SAFETY NOTES: Adult Supervision Strongly Suggested -- This Activity Requires Very Hot Water. Food Coloring Used May Stain Clothing Or Hands. NATIONAL SCIENCE STANDARDS: Physical Science: Properties And Changes Of Properties In Matter Science And Technology: Understanding About Science And Technology STANDARDS FOR TECHNOLOGY LITERACY: The Nature of Technology: Students will develop an understanding of the core concepts of technology. Students will develop an understanding of the relationships among technologies and the connections between technology and other fields of study.

LECTURE AND PREPARATION TIME: 30 minutes LESSON TIME: 45 minutes WORDS TO KNOW: condensation energy evaporation gas liquid phase phase diagram pressure solid steam sublimation temperature thermodynamics triple point vapor SPECIAL NOTES: Although the science concepts are intended for middle school students, younger and older students may enjoy this activity.