Tonight Eleanor and I worked on her Home Scientist badge for Brownie Scouts. It was so much fun!
We made rock candy, floated an egg in salt water, bent a stream of water with static electricity, inflated a balloon with a vinegar/baking soda reaction . . .
. . . and made the ol’ cornstarch-n-water slime, which the Brownie handbook called “dinosaur snot.” So fun to play with!
Eleanor has now passed off all her badge requirements — and Wimmy is wondering if he can have a badge, too. He isn’t a Brownie Scout Helper, he ‘s a Brownie Scout Hero, he insists. Cute.
Casa Camisas 
Wow, you did that all in one night?!! That’s impressive. It looks like a lot of fun too. What’s the science behind floating an egg in salt water? Is there a reason it’s an egg, and not something else? Just curious.
It wasn’t that hard, it only took a little over an hour to do it all (with many, many thanks to Brian for herding Katie out of our way for the evening).
The egg experiment was about density — an egg will sink to the bottom of a glass of water, but float in salt water. I guess they used an egg because it’s a common household object that will float in salt water? Whatever the reason, it worked for us. Way fun!