the one with the midterm projects pt. II

We continued watching the science presentations today. The computer, sadly, was not working so the first group had to wait quite a while before the projector was finally working.

Projects presented today:

• Elephant Toothpaste: this was made with food coloring, dish soap, peroxide, and iodide.
• Bottle Rockets: a mixture created by baking soda dropped into a bottle of vinegar. My group presented today, and we had fun. I especially liked our video :)
• Oobleck: a mixture of baking soda and water. Last time we had this class there were around 5-7 people who presented this same project. It's cool, but it's getting old.
• Oil and Soap: first we dipped a bird feather into a cup of water, which the feather repelled. Then we dipped it into a cup of vegetable oil, which immediately stuck to the feather. It was sad seeing how birds can no longer fly with coated feathers after an oil spill.

blog you later,
[andrea]