![]() They will also be able to use the color changes of universal indicator to monitor the changing pH of a solution during a chemical reaction. Students will be able to explain that carbon dioxide from any source reacts chemically with water to form carbonic acid. Students then apply their observations to the environmental problem of ocean acidification by doing research on this issue. Students explore whether carbon dioxide from other sources, namely carbonated water and a chemical reaction between baking soda and vinegar, can also make a solution acidic. ![]() Students interpret this color change and explain that the solution becomes acidic. The teacher blows into a universal indicator solution until it changes color. ![]()
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