Exam 4 Bank SAMPLE - What kind of energy is transferred...

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What kind of energy is transferred from a hotter object to a colder object? a. work b. heat c. temperature d. none of the above What moves an object against a force? a. heat b. energy c. work d. radioactivity What is entropy? a. work b. disorder c. bond energy d. a made-up concept Which is true of a spontaneous reaction? a. it results in a net loss of energy b. it requires a net input of energy c. it must happen quickly d. it happens to flighty compounds that act without thinking True or false: wood burning is spontaneous. a. true; it releases energy b. false; it won’t happen without adding a little bit of starter energy c. false; it requires a net input of energy d. true; the National Enquirer says spontaneous combustion is real! Which quantity determines in what direction heat energy will flow between objects? a. temperature b. heat c. overall d. none of the above If a system “A” is higher in energy than a system “B”, which statement is true? a. A can proceed to B spontaneously b. A is more stable than B c. B can proceed to A spontaneously d. none of the above are true What does the first law of thermodynamics state? a. the energy of the universe is always decreasing b. the entropy of the universe is constant c. the energy of the universe is constant d. let sleeping dogs lie What does the second law of thermodynamics state? a. the entropy of the universe increases for all processes b. the energy of the universe is constant c. the energy of the universe increases for all processes d. don’t look a gift horse in the mouth What is an example of increasing entropy? a. atoms become more ordered as a crystal forms
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b. atoms become less ordered as a crystal dissolves in liquid c. cleaning up a room requires effort d. none of the above Which quantity measures the ability of an object to do work? a. temperature b. heat c. energy d. motivation factor Why do some spontaneous processes (like wood burning) require energy initially? a. to break the first bonds b. to form the first bonds c. both a and b d. neither a nor b The reaction CO 2 + 2 H 2 O CH 4 + 2 O 2 requires energy. Which statement is true? a. CH 4 and O 2 bonds are higher in energy than CO 2 and H 2 O bonds b. CH 4 and O 2 bonds are lower in energy than CO 2 and H 2 O bonds c. CH 4 and O 2 bonds are equal in energy to CO 2 and H 2 O bonds d. it is impossible to answer this question without more information The reaction 2 O 3(g) 3 O 2(g) releases energy. Which statement is true? a. O 2 bonds are higher in energy than O 3 bonds b. O 3 bonds are higher in energy than O 2 bonds c. O 2 bonds are equal in energy to O 3 bonds d. it is impossible to answer this question without more information The reaction C 6 H 12 O 6 + 6 O 2 6 CO 2 + 6 H 2 O releases energy. Which statement MUST BE true?
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