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I show my kids by doing the same stupid stuff i did as a teen and how "dangerous" it is. Empty bottle of isopropyl alcohol? shake it, hold an electric or regula
by genewitch 4y ago
I show my kids by doing the same stupid stuff i did as a teen and how "dangerous" it is. Empty bottle of isopropyl alcohol? shake it, hold an electric or regular lighter over the opening - foomf. shake, foomf. shake, foomf. Over and over. The fire doesn't burn the liquid, but the vapor created by shaking the container.
try explaining how a gas engine works to someone that doesn't understand how vapor burns but liquid doesn't.
My latest "prove something" was taking my brightest flashlight and putting it flush against the bottom of a clear container of peanut butter in a dark room. When you shut off the flashlight, the peanut butter fluoresces. It "glows in the dark" for a short time. really cool.
this whole PDF is whimsically old, but it has some good experiments nonetheless.