Transcript 05_Clickers.pptx
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Clicker Questions Chapter 5 Barbara Mowery York College
A moving racquetball has a. kinetic energy.
b. potential energy.
c. work.
d. heat.
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A moving racquetball has
a. kinetic energy.
b. potential energy.
c. work.
d. heat.
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A motionless racquetball has a. kinetic energy.
b. potential energy.
c. work.
d. heat.
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A motionless racquetball has a. kinetic energy.
b. potential energy.
c. work.
d. heat.
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As the racquetball game progresses, the players perspire, giving off a. kinetic energy.
b. potential energy.
c. work.
d. heat.
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As the racquetball game progresses, the players perspire, giving off a. kinetic energy.
b. potential energy.
c. work.
d. heat.
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Work = __________ a. energy × distance b. energy ÷ distance c. force × distance d. force ÷ distance © 2015 Pearson Education, Inc.
Work = __________ a. energy × distance b. energy ÷ distance
c. force
×
distance
d. force ÷ distance © 2015 Pearson Education, Inc.
The sum of all of the kinetic and potential energies of a system is called the a. integral energy.
b. dynamic energy.
c. internal energy.
d. work.
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The sum of all of the kinetic and potential energies of a system is called the a. integral energy.
b. dynamic energy.
c. internal energy.
d. work.
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Which set of values for heat and work will result in a decrease of internal energy?
a. q = –150 J; w = +150 J b. q = –150 J; w = +300 J c. q = +150 J; w = –300 J d. q = +300 J; w = –150 J © 2015 Pearson Education, Inc.
Which set of values for heat and work will result in a decrease of internal energy?
a. q = –150 J; w = +150 J b. q = –150 J; w = +300 J
c. q = +150 J; w = –300 J
d. q = +300 J; w = –150 J © 2015 Pearson Education, Inc.
Which set of values for heat and work will result in an increase of internal energy?
a. q = +300 J; w = –150 J b. q = –150 J; w = +150 J c. q = +150 J; w = –300 J d. q = –300 J; w = +300 J © 2015 Pearson Education, Inc.
Which set of values for heat and work will result in an increase of internal energy?
a. q = +300 J; w = –150 J
b. q = –150 J; w = +150 J c. q = +150 J; w = –300 J d. q = –300 J; w = +300 J © 2015 Pearson Education, Inc.
A system absorbs heat during an _______ process.
a. exothermic b. isothermal c. endothermic d. isobaric © 2015 Pearson Education, Inc.
A system absorbs heat during an _______ process.
a. exothermic b. isothermal
c. endothermic
d. isobaric © 2015 Pearson Education, Inc.
If X is a state function, then the change in X is given by (X final __ X initial ).
a. + b.
– c.
× d.
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If X is a state function, then the change in X is given by (X final __ X initial ).
a. +
b.
–
c.
× d.
÷ © 2015 Pearson Education, Inc.
Which group includes only state functions?
a. P, T, V b. P, H, w c. H, q, w d. P, R, q, w © 2015 Pearson Education, Inc.
Which group includes only state functions?
a. P, T, V
b. P, H, w c. H, q, w d. P, R, q, w © 2015 Pearson Education, Inc.
Which of these is
not
a state function?
a. enthalpy b. internal energy c. temperature d. work © 2015 Pearson Education, Inc.
Which of these is
not
a state function?
a. enthalpy b. internal energy c. temperature
d. work
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Which statement about enthalpy is
not
correct?
a. Enthalpy can be measured in joules per mole.
b. Enthalpy is a state function.
c. Enthalpy is an extensive property.
d. Change in enthalpy is negative for an exothermic reaction.
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Which statement about enthalpy is
not
correct?
a. Enthalpy can be measured in joules per mole.
b. Enthalpy is a state function.
c. Enthalpy is an extensive property.
d. Change in enthalpy is negative for an exothermic reaction.
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The laboratory technique used to measure heat flow is called a. calorimetry.
b. neutralization.
c. titration.
d. voltammetry.
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The laboratory technique used to measure heat flow is called
a. calorimetry.
b. neutralization.
c. titration.
d. voltammetry.
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When a piece of iron at 356 K is placed in water at 298 K, what happens?
a. Energy flows from iron to water.
b. Energy flows from water to iron.
c. Energy does not flow.
d. Energy is not conserved.
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When a piece of iron at 356 K is placed in water at 298 K, what happens?
a. Energy flows from iron to water.
b. Energy flows from water to iron.
c. Energy does not flow.
d. Energy is not conserved.
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A substance’s specific heat is its heat capacity per a. mole.
b. gram.
c. joule.
d. kelvin.
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A substance’s specific heat is its heat capacity per a. mole.
b. gram.
c. joule.
d. kelvin.
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The specific heat of water is relatively large. This means that in response to a ____ amount of heat, it shows a ____ change in temperature.
a. large; large b. small; large c. large; small d. small; small © 2015 Pearson Education, Inc.
The specific heat of water is relatively large. This means that in response to a ____ amount of heat, it shows a ____ change in temperature.
a. large; large b. small; large
c. large; small
d. small; small © 2015 Pearson Education, Inc.
The standard enthalpy of formation of carbon in its graphite form is ___ kJ/mole.
a. 100 b. 1000 c. 1 d. 0 © 2015 Pearson Education, Inc.
The standard enthalpy of formation of carbon in its graphite form is ___ kJ/mole.
a. 100 b. 1000 c. 1
d. 0
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The standard enthalpy of formation of carbon in its diamond form is +1.88 kJ/mole, which means that diamond is __________ graphite.
a. as stable as b. more stable than c. less stable than d. an isotope of © 2015 Pearson Education, Inc.
The standard enthalpy of formation of carbon in its diamond form is +1.88 kJ/mole, which means that diamond is __________ graphite.
a. as stable as b. more stable than
c. less stable than
d. an isotope of © 2015 Pearson Education, Inc.
2 H 2 + O 2 2 H 2 O If the reaction above releases 483.6 kJ, then the standard enthalpy of formation of H 2 O = a.
–483.6 kJ/mole.
b. +483.6 kJ/mole.
c.
–241.8 kJ/mole.
d. +241.8 kJ/mole.
© 2015 Pearson Education, Inc.
2 H 2 + O 2 2 H 2 O If the reaction above releases 483.6 kJ, then the standard enthalpy of formation of H 2 O = a.
–483.6 kJ/mole.
b. +483.6 kJ/mole.
c.
–241.8 kJ/mole.
d. +241.8 kJ/mole.
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The average fuel values for proteins, carbohydrates, and fats are, respectively, _______ kcal/g.
a. 4, 4, and 4 b. 4, 4, and 9 c. 4, 9, and 4 d. 9, 4, and 4 © 2015 Pearson Education, Inc.
The average fuel values for proteins, carbohydrates, and fats are, respectively, _______ kcal/g.
a. 4, 4, and 4
b. 4, 4, and 9
c. 4, 9, and 4 d. 9, 4, and 4 © 2015 Pearson Education, Inc.