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 describes an observation made during a scientific investigation involving two clear solutions. It asks what is most likely the cause of the observed changes in temperature and the formation of a white substance. This question pertains to the concepts of chemical and physical changes in solutions.
Answer
A chemical change occurred.
A chemical change occurred.
Answer for screen readers
A chemical change occurred.
More Information
The formation of a precipitate and change in temperature are classic indicators of a chemical reaction. In this context, the formation of a solid and temperature change strongly suggest that a reaction has occurred.
Tips
A common mistake is assuming evaporation occurred, but evaporation generally does not cause rapid formation of a solid out of two liquid solutions.
Sources
- Indicators of Chemical Reactions | Quizizz - quizizz.com
- During an investigation - Gauthmath - gauthmath.com
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