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Chem 65 Spring Quiz 2 - Name_Mr Perfect Date_Sp 11 1 State...

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Name ___Mr. Perfect _________________________________ Date __Sp 11 _________ Chemistry 065 Quiz 2 1. State whether each of the following is a physical change or a chemical change. (2 pts) a) Cutting aluminum foil. b) Combustion of gasoline. Physical Change Chemical Change 2. An ice cube at 0 °C melts to water by absorbing heat. If 10.5 kcal of heat is required to melt the ice, how much energy must be lost to freeze the water to ice at 0 °C? (2 pts) Conservation of Energy 3. How many joules are in a soft drink that contains 201 nutritional calories? (2 pts) 1 cal = 4.18 J 1000 cal = 1 kcal A nutritional calorie (Cal) is equal to one kcal.
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