by msander | Oct 31, 2018 | Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry
The Alka-Seltzer tablets contain sodium bicarbonate and citric acid. As the Alka-Seltzer tablet dissolves in water, the citric acid reacts with the sodium bicarbonate to produce carbonic acid (Equation 1) and carbon dioxide (Equation 2). The carbonic acid then reacts...
by msander | Oct 12, 2018 | Gr 9-10 Science, Gr. 11-12 Chemistry
A candle and beaker of pink phenolphthalein solution are placed inside a jar. The candle is lit and the jar is capped. The flame expectedly goes out as the oxygen is depleted. After the flame is extinguished, the pink solution slowly fades to colourless. What has...
by msander | May 28, 2018 | Gr 9-10 Science, Gr. 11-12 Chemistry
Show the power of chemistry by tearing apart an aluminum soda can with little effort. Just score the inside of a soda can to break the plastic lining, add some copper(II) chloride and water, and sit back—chemistry will do the rest. The single replacement reaction of...
by msander | Apr 19, 2018 | Gr 4-6 Science & Tech, Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry
Everyone is self-conscious about having bad breath, but what about acid breath? Our science guy Steve Spangler puts on the lab coat to reveal the chemistry of your breath. Contact Steve Spangler at steve@stevespangler.com Contact Steve’s business manager at...
by msander | Mar 15, 2018 | Gr 9-10 Science, Gr. 11-12 Chemistry
If you ever find a “gold” penny in your pocket of change, don’t quit your day job. It’s either the work of a Leprechaun or a classroom of young alchemists who are practicing their metal changing skills. Steve Spangler has two young alchemist in...
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