26 – 28 of 28 Classroom Resources

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  Freezing Point, Melting Point, Phase Changes, Physical Change | Middle School

  Lesson Plan: Stearic Acid Mark as Favorite (2 Favorites)

  In this lesson, students investigate how stearic acid undergoes a phase change from solid to liquid and back from liquid to solid. Temperature readings will be collected at one-minute intervals once the acid melts, the heat escapes, and the acid cools. Students are introduced to the idea that energy loss does not always result in a continuous temperature drop.

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  Indicators | High School, Middle School

  Lab: Detecting pH of Commonly Used Acids and Bases Mark as Favorite (13 Favorites)

  In this lab, students will use their knowledge of acids and bases to determine the acidity and basicity of every day items by measuring pH using several different methods for determination. Indications of pH may be determined using red & blue litmus paper, pH strips, and pH probes or pH meters.

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  Indicators | Middle School, High School

  Lab: Cellular Respiration and pH Mark as Favorite (14 Favorites)

  In this lab, students learn how a pH indicator can be used to detect the presence of CO2 when they exhale.