Chemistry in Action - Natural Acid-Base Indicators

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Did you know that you can make a universal indicator out of red cabbage? Amazingly, you can and it's an easy process to boot! Today's free chemistry video is on Natural Acid-Base Indicators. Watch Professor Yee demonstrate how to make the indicator and then use it to test the pH of several household substances. This is a great experiment you can try at home. It's fun to see what colors the indicator turns based upon whether the substance you are testing is a strong versus weak acid or base, or whether it's neutral.  In case you didn't know, a base is a substance that increases the amount of hydroxide ions when dissolved in water. An acid is a substance that increases the amount of hydrogen ions when dissolved in water. So, watch the video, try it at home and make your own acid-base indicator from red cabbage!

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This page contains a single entry by April Stockwell published on November 12, 2010 4:01 PM.

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Chemistry in Action - Magnesium and Dry Ice is the next entry in this blog.

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