WA01_CHE-112 part 3 - Written Assignment 1 Intermolecular...

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Written Assignment 1: Intermolecular Forces and Liquids and Solids11. What is an amorphous solid? How does it differ from a crystalline solid? (3 points)
12. What is a phase change? Construct a heating-cooling curve for a substance that freezes
occur among the vapor, liquid, and solid phases of this substance, and name the four phase change enthalpies involved. Indicate whether these changes are exothermic or endothermic. (6 points)
13. Why is solid carbon dioxide called dry ice? (3 points)

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