Today we went over to our friends’ house to play and do some science experiments with all of the kids.
I made a video to capture some of the fun 🙂
The first experiment was the famous Mentos and Diet Coke geyser. It is pretty self-explanatory- you drop a whole ton of Mentos into a 2 liter of Diet Pop and watch the explosion. Reading up on the history of it, folks used to use wintergreen lifesavers until the company made them bigger. Then they would not fit in the bottle anymore, thus the switch to Mentos.
The second experiment is the popping sandwich bag. A small packet of baking soda wrapped in a bit of napkin is tossed into a bag of warm water and vinegar and then shaken until it explodes and froths all over. The girls really liked this one and each did it a second time. The bags popped really fast before we could even set them down!
The third experiment was pouring some salt on top of a string that was on top of some ice cubes. The salt melted the ice enough for it to refreeze around the string. The kids could pick the ice cubes up by the string. A few also taste-tested the salty ice, LOL.
The last experiment was checking for iron in fortified cereal. The kids smooshed up chex in baggies and then passed a magnet through the crumbs. It doesn’t show up well in the video, but little bits of iron/cereal dust did stick to the magnet.
These were all pretty fast and easy to do.