Saturday, October 15, 2011

It's Not Magic!

This week we learned about Physical Changes. A physical change can affect the size, shape or color of a substance. We started out with BTB mixed with water. No we are not drinking it!  We are mixing in Carbon Dioxide or the air we breath out. It turned GREEN!

When we added a mixture of vinegar and water it turned yellow!

Finally, we added water and baking soda and it turned back to BLUE!

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