1) Why is water often used as a coolant in automobiles, other than the fact that it is abundant? a) The specific heat of water is relatively large and it can store a great deal of thermal energy. b) The specific heat of water is relatively small and its temperature can be rapidly decreased. c) The freezing temperature of water has a relatively large value. d) Water does not easily change into a gas. 2) Complete the following statement: The first law of thermodynamics states that… a) two systems in thermal equilibrium with a third system are in equilibrium with each other. b) the entropy of the universe is increasing. c) the change in the internal energy of a system is given by Q − W. d) entropy is a function of the state of a system. 3) When applying the first law of thermodynamics to a system, when is heat a positive quantity? a) when the system does work b) when the system loses heat c) when no work is done either on the system or by the system d) when the system absorbs heat 4) The Law of _______________ states that energy cannot be created nor destroyed only transferred a) Conservation of Energy b) Specific Heat c) Potential Energy d) Exothermic Reaction 5) Thermodynamics is the study of what? a) The creation of energy b) The speed of reactions c) The transfer of energy d) The affect of heat on the speed of a reaction 6) The SI unit for measuring heat is the a) pascal b) Joule c) calorie d) newton 7) What is the equation for the first law of thermodynamics? a) U=-Q+W b) U=Q-W c) U+Q+W=0 d) U=Q+W 8) The first law of thermodynamics is basically the same as which law from physics 1? a) The law of conservation of energy b) The law of conservation of momentum c) Newton's second law d) Newton's first law 9) The first law of thermodynamics states that the change in the internal energy of a system is equal to the difference in energy transferred to or from the system as heat and a) pressure b) mass c) work done d) force 10) The temperature of a glass of cold water will eventually... a) Never change temperature. b) Always be colder than the surrounding environment. c) Become warmer than the surrounding environment. d) Match the temperature of the surrounding environment.

Thermochemistry

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