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INTRODUCTORY CHEMISTRY 6TH EDITION by Nivaldo J Tro
Example 7.1 Evidence of a Chemical Reaction Which changes involve a chemical reaction? Explain your answers. a. ice melting upon warming b. an electric current passing through water, resulting in the formation of hydrogen and oxygen gas that appears as bubbles rising in the water c. iron rusting d. bubbles forming when a soda can is opened Solution a. not a chemical reaction; melting ice forms water, but both the ice and water are composed of water molecules. b. chemical reaction; wat...
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Example 7.1 Evidence of a Chemical Reaction Which changes involve a chemical reaction? Explain your answers. a. ice melting upon warming b. an electric current passing through water, resulting in the formation of hydrogen and oxygen gas that appears as bubbles rising in the water c. iron rusting d. bubbles forming when a soda can is opened Solution a. not a chemical reaction; melting ice forms water, but both the ice and water are composed of water molecules. b. chemical reaction; wat...