Hi everyone!
I am in a methods of science course right now, and our assignment is to put together a unit surrounding a certian topic. I picked to do my unit of dissolving and diffusion. I was hoping to hear if anyone knows of any engaging, fun STEM activities that I could use for my unit. I am looking forward to hearing any sugestions anyoine might have!
Hi Amanda!
So here's an engaging experiment you could use to teach diffusion. Pour several drops of a strongly scented liquid extract—like vanilla, lemon or mint—into a deflated balloon. Blow up the balloon slightly, tie off the end and put it into a box. Close the lid of the box and tape it shut. Let the box rest for a few minutes, then open one side of the box and ask students to sniff inside it. Explain that they can smell the scent—even though it was inside the balloon—because the scent vapors osmote through tiny holes in the surface of the balloon. The inside of the box remains dry, however, because the liquid molecules are too large for the membrane
Here's where I found this activity: https://sciencing.com/diffusion-osmosis-lesson-activities-8609725.html
Hope this helps!
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