February 12

Bloody Hand and Upset Stomachs

Third grade chemists continued their study of acids and bases. We soaked our hands in a solution of baking soda and water and placed them on goldenrod copy paper. When we lifted our hands, there were red handprints. What happened? The goldenrod paper contains a special dye that turns bright red when exposed to solutions that are basic. When we placed vinegar, an acid, on the paper with a Q-tip, the paper turned back to yellow. When something doesn’t make sense, find the science!

We discovered how an antacid works in the investigation below. Click here to learn more.

Posted February 12, 2021 by pbright2 in category Science

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