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This 1 page Class Notes was uploaded by Courtney Williams on Monday March 7, 2016. The Class Notes belongs to 1160 at East Carolina University taught by Dr. Rosa Bell in Spring 2016. Since its upload, it has received 5 views. For similar materials see General Chemistry II in Chemistry at East Carolina University.
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Date Created: 03/07/16
1. A graph of the physical state of a substance as a function of ______ and _____ is called a phase diagram. A. Volume and temperature B. Temperature and pressure C. Pressure and volume D. Mass and pressure 2. On the heating curve for water there are three rising segments, each with different slope. What is the significance of the slopes? A. The slopes have no significance. B. They indicate how much heat has to be added to achieve a phase change. C. They indicate how much heat is needed to increase the temperature of the substance. D. They indicate how much pressure is needed to achieve a phase change. 3. Which of the following cubic unit cells has the greatest packing efficiency? A. They all have the same packing efficiency B. Face-centered C. Simple cubic D. Body-centered 4. The phase diagram of a substance is shown below. What letter indicates the region where the solid phase exists? A 5. Which of the following statements is TRUE? A. In general the heat of fusion is significantly greater than the heat of vaporization B. Vaporization requires that intermolecular forces in the liquid be only partially overcome. C. In general the heat of vaporization is significantly greater than the heat of fusion D. For fusion to occur the intermolecular forces in the solid must be completely overcome.