Friday, November 11, 2011
Submarines and Mystery Powders!
CLICK HERE TO ORDER YOUR OWN DIVING SUBMARINE!
We performed several tests to determine the identity of 4 mystery powders. I picked a fine day to wear black.. but, I wear black almost every day! Ha!
We looked for a chemical reaction of the mystery powder and vinegar. We thought two of the powders reacted to vinegar by making a bubbling fizz! POWDERS B AND D!
Another test was the dissolving test. We added each powder to a separate cup of water and determined how well it dissolved. Powder B dissolved the best.
We then tested the texture of each powder and tried to find the one which was the most sticky. The scientists thought Powder A smelled like yeast!!Powder A was the most sticky!
Some scientists liked the texture test more than others!
McGee and Molly journaled and followed directions!
Jessica's Journal looked great, with color and detailed notes!
Finally, the submarine test! One of the powders caused the sub to dive up and down in the water when you place the powder in the small chamber. Great lesson in density and buoyancy!