C8e_03_Test_Bank

# Which of the following statements correctly defines a

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8) Which of the following statements correctly defines a kilocalorie? A) the amount of heat required to raise the temperature of 1 g of water by 1°F B) the amount of heat required to raise the temperature of 1 g of water by 1°C C) the amount of heat required to raise the temperature of 1 kg of water by 1°F D) the amount of heat required to raise the temperature of 1 kg of water by 1°C E) the amount of heat required to raise the temperature of 1,000 g of water by 1°F Answer: D Topic: Concept 3.2 Skill: Knowledge/Comprehension

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3 9) The nutritional information on a cereal box shows that one serving of a dry cereal has 200 kilocalories. If one were to burn one serving of the cereal, the amount of heat given off would be sufficient to raise the temperature of 20 kg of water how many degrees Celsius? 10) Water's high specific heat is mainly a consequence of the 11) Which type of bond must be broken for water to vaporize? 12) Temperature usually increases when water condenses. Which behavior of water is most directly responsible for this phenomenon? A) the change in density when it condenses to form a liquid or solid B) reactions with other atmospheric compounds C) the release of heat by the formation of hydrogen bonds D) the release of heat by the breaking of hydrogen bonds E) the high surface tension of water Answer: C Topic: Concept 3.2 Skill: Application/Analysis 13) At what temperature is water at its densest?
4 14) Why does ice float in liquid water? The following question is based on Figure 3.1: solute molecule surrounded by a hydration shell of water. Figure 3.1

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