1) The First Law of Thermodynamics is also known as … a) conservation of mass b) conservation of energy  2) In the Second Law, entropy (increase/decrease) in spontaneous process a) increases b) decreases 3) heat can flow … a) only from hot to cold b) from cold to hot without work 4) perpetual motion machines of the first kind are (possible/impossible) a) possible b) impossible 5) efficiency of a heat engine is always… a) less than 100% b) equal to 100% 6) the total energy of an isolated system is always … before and after a process  a) equal to b) more 7) heat flows from a body at … temperature to a body at … temperature. a) fewer, more b) higher, lower 8) the entropy of the universe is always becoming … after a spontaneous process a) greater b) less 9) the First Law is … about conservation of energy, while the Second Law is … about the direction of process a) equal to, more b) about, more 10) a reversible process is … efficient than an irreversible process a) fewer b) more 11) First Law a) energy conservation, basis of energy balance b) mass conservation, mass balance 12) Second Law a) Enthalpy, movement, reversibility b) Entropy, direction, irreversibility

Thermodynamics

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