1151 Mock Exam 2 Spring 2018.pdf

1151 Mock Exam 2 Spring 2018.pdf - Name CHEM 1151 SPRING...

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Name___________________________________ CHEM 1151 SPRING 2018 MOCK Exam 2 TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) 650 cal = 2700 J 1) 2) The heat of fusion is greater than the heat of vaporization. 2) 3) Radon is a metal. 3) 4) The atomic number is equal to the number of protons. 4) 5) A calcium atom two electrons in the fourth energy level. 5) 6) Exposure to radiation is unavoidable because some radioactive elements occur naturally. 6) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 7) 3.25 kcal is the same amount of energy as ________. 7) A) 13600 J B) 3.25 J C) 0.777 J D) 777 J E) 13.6 J 8) The specific heat of a substance is the amount of heat needed to ________. 8) A) change 1 g of the substance from the liquid to the solid state B) convert 1 g of a solid to a gas C) raise the temperature of 1 g of the substance by 1 °C D) convert 1 g of a liquid to gas E) change 1 g of the substance from the solid to the liquid state 9) Raising the temperature of 10.0 g of water from 10.0 °C to 20.0 °C requires 100.0 cal of energy, while raising the temperature of 10.0 g of aluminum from 10.0 °C to 20.0 °C requires 22.0 cal. More calories are required to heat the water because ________. 9) A) water has a larger specific heat than aluminum B) water is a liquid and aluminum is a solid at 10.0 °C C) ten grams of water occupies a larger volume than 10.0 g of aluminum D) 10.0 °C is closer to the melting point of water than to the melting point of aluminum E) water has a greater potential energy than aluminum 10)
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