So, I found this awesome blog post with fizzy sidewalk paint. How great for my boys! Outside, paint, mess, and science fizzing. I set to work one lovely morning!
The recipe called for 1 box of baking soda, 1/2 cup of corn starch, and warm almost hot water to get the thickness. I put a bit of water in, too thick. A bit more, still a thick paste. A little bit more….super thin. What? Oh well. Poured it into a few cups, added food coloring, and set the boys loose.
It became immediately evident that it was too thin, as anything they painted was a slightly tinted wet spot. But hey, they were having fun.
Once the painting fun wore off, I filled up a squirt bottle with about 1/4 water and 3/4 vinegar. I took it out to test spray…and the end of the bottle that makes it spray like we need instead of a thin squirt is missing. What? Ugh. Ok, so we’ll squirt and get some fizz. And we did. A teeeny, tiny bit where they painted, because duh, very little baking soda made it into the paint they were using.
So, I improvised. I stirred up the paints I could find (um, where did the red go?) and dumped them. (more…)