51 – 52 of 52 Classroom Resources

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  Intermolecular Forces, Physical Properties, Melting Point, Boiling Point | High School, Middle School

  Activity: Simulation Activity: Exploring Intermolecular Forces with Odyssey Mark as Favorite (4 Favorites)

  In this simulation, students will learn about the different intermolecular forces. They will use the simulation to see how molecules in various species interact with one another.

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  Molecular Structure, Intermolecular Forces, Polarity, Polymers, Molecular Structure , Functional Groups, Polymers | High School

  Video: Ingenious Video 6: Kill More Germs by Cleaning … Less? Mark as Favorite (2 Favorites)

  There’s clean, and then there’s CLEAN. Even if something looks clean, it might still be harboring microbes – many of them harmless, some of them definitely not. With most of the ways that we clean and disinfect — that is, kill germs — the clean doesn’t last as long as you might think. Disinfectants work by attacking bacterial membranes and viral protein coats, breaking them down so that those germs fall apart and die. But the germaphobes were always right: As soon as a disinfectant dries, and a surface is re-exposed, like if someone touches or (worse) sneezes on it, it needs be disinfected all over again. The next generation of cleaning products, however, add a trick: they lay down an incredibly thin polymer layer that keeps the germ-killing ingredients in place and effective for 24 hours at a time.