i decided i'd try it out with elliott while molly was napping. here is how our adventure went:
fill a clear cup half full of vinegar, add dish soap and food colouring
(blue is always elliott's colour of choice) and stir.
add a heaping teaspoonful of baking soda.
watch in amazement as it grows blue foam.
after the amazement wears off, add yellow food colouring to see what will happen.
watch as the foam turns florescent yellow.
then stir in red food colouring, again to see what will happen.
drip the creepy red foam around for awhile.
get a call from grandpa to go play in the snow and run away.
ha ha, at least it was fun while it lasted!
you can find this and many other great ideas from mini-eco on her great blog or throughout my pinterest boards!