During an investigation, a student combined two clear, colorless solutions. The student observed that the temperature changed when the solutions were combined and that a white subs... During an investigation, a student combined two clear, colorless solutions. The student observed that the temperature changed when the solutions were combined and that a white substance rapidly formed and settled to the bottom of the container. What most likely happened to produce these results?
Understand the Problem
The question is asking what chemical reaction occurred when the student combined two clear, colorless solutions, leading to a temperature change and the formation of a white substance. This requires knowledge of chemical reactions and solubility principles to explain the phenomena observed.
Answer
A chemical reaction producing a precipitate and temperature change occurred.
A chemical reaction occurred, likely an endothermic one, resulting in the formation of a white precipitate and a change in temperature.
Answer for screen readers
A chemical reaction occurred, likely an endothermic one, resulting in the formation of a white precipitate and a change in temperature.
More Information
The observed temperature change and the formation of a precipitate suggest an endothermic reaction, where energy is absorbed from the environment, decreasing the temperature. The precipitate indicates a new solid compound formed, which separates out from the solution.
Tips
A common mistake is misinterpreting the temperature change direction. Ensure careful observation of whether the temperature increases or decreases to determine if the reaction is endothermic or exothermic.
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