Sunday, January 31, 2010
Science Fair project #1
In order to show the kids easily that water does turn into a gas when exposed to heat/air, we fist made a salt solution using 1/4 cup water, and three tablespoons of salt.
Next we used black construction paper, and paint brushes.
When we took them out, it was quite apparent that all of the water did indeed evaporate, and we were only left with the salt crystals adorning our paper. My camera did not catch all the little sparkly rainbows dancing off the crystals in the sun. It was pretty, but I think it needed more salt in the water, so if we did this again I would increase the salt by a few tablespoons.
We like sparklies.
This experiment was from the book "Chemistry For Every Kid" by Janice VanCleave
It is experiment #62, titled Crystal Ink, on page 132.