Acids, bases and pH

This activity complements my website’s Ocean Acidification Kids’ Page. Never heard of ocean acidification? I’m not surprised: the mainstream media rarely talks about it. Yet ocean acidification, like its sister problem global warming, may change our planet forever.

Ocean acidification is happening because about a third of the carbon dioxide released from the burning of fossil fuels ends up in the ocean, where it reacts with ocean water, causing it to grow more acidic.

In the following experiment you will make your own pH indicator from red cabbage. Using this pH indicator, you can see for yourself how carbon dioxide acidifies water. For more on acids, bases and pH, go to my Ocean Acidification Kids’ Page.

Mad Science – Groovy Art – Awesome Activities Blog, 10 December 2010. More information.


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