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Soap vs. Shampoo Surfactant Lab - Activity
Students learn about the properties of solutions—such as ion interactions, surface tension and viscosity—as they make their own soap and shampoo and then compare their properties. Working as if they are chemical engineers, they explore and compare how the two surfactants behave in tap water, as well as classroom-prepared acidic water, hard water and seawater using four tests: a “shake test” (assessing the amount of bubbles produced), a surface tension test, a viscosity test, and a pH test.
My first year teaching chemistry, I was looking for a soap-making lab or activity that I could run in my chemistry class with 25-30 students working at the same time. I usually do this activity right before spring break, as it provides enough time for the soap to harden and cure (high school students are impatient to use their soaps right away, which you should not do with
Three Tools to Reduce Grading Time While Boosting Student Growth
Spend less time grading and more time lesson planning...and resting. I love these teacher time management tips for reducing grading piles and overwhelm. When I started implement these systems, I had fewer papers to grade, more rapid student growth, and more time to recharge.#teachertips #teacherorganization #grading #gradingtips #elementaryteachers #coreinspiration
These virtual labs train high school and college students in basic laboratory techniques. Using specific scientific lab processes already used in food science, students practice the methods used by lab technicians and researchers in a variety of careers.