Tuesday, February 18, 2014

Chemical Reactions

Ever since we did a lab in IPC that focused on physical and chemical changes, I have been wondering how chemical reactions form. In our lab, the powders we had were talc (baby powder), baking powder, baking soda, and cornstarch. After we got the powders, we had three liquids to drop in the powder. Iodine, vinegar, and tap water. As we were doing the lab, I noticed that a lot of the powders, when mixed with the liquids, formed a chemical reaction. A chemical reaction is when a substance (or a few substances) change into another substance. One I was particularly curious about was baking soda mixed with the iodine and the vinegar. When we mixed the baking soda with the iodine, it changed to a color very close to black. When we mixed it with vinegar, it turned almost into soda. It bubbled and fizzed like soda would. It was really weird to get to see how these substances and liquids react with one another. My question is, what causes a chemical reaction in a test like baking soda and vinegar? When vinegar and baking soda are mixed together, it creates carbon dioxide.

Why and How Vinegar and Baking Soda react the way that they do

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