General Questions
These questions are not explicitly keyed to chapter topics; many require integration of several concepts.
Classify the information in each of these statements as quantitative or qualitative and as relating to a physical or chemical property.
(a) A liter of water, colored with a purple dye, was passed through a charcoal filter. The charcoal adsorbed the dye, and colorless water came through. Later, the purple dye was removed from the charcoal and retained its color.
(b) When a white powder dissolved in a test tube of water, the test tube felt cold. Hydrochloric acid was then added, and a white solid formed.
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