Page 92 - Canadian BC Science 9
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Bubbles and fizz. That is what you get when you drop an antacid tablet into a glass of water. Why the fizz? The tablet contains two chemicals that dissolve on contact with water. The chemicals react with each other to produce carbon dioxide,
a gas that helps break down the tablet, and sodium citrate, a compound that neutralizes stomach acids. In just a few seconds, the two chemicals have been transformed into something new. Chemical change is happening all around you, as elements combine to produce compounds.
74 MHR • Unit 1 Atoms, Elements, and Compounds
