CHEM 105 - General Chemistry 1 (Fall 2015)

Frage 1 von 24

1

Fülle die Lücken, um den Text zu vervollständigen.

Energy is the to do .

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Frage 2 von 24

1

Fülle die Lücken, um den Text zu vervollständigen.

Work is the result of a acting through a .

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Frage 3 von 24

1

What are the two primary methods through which objects or sets of objects exchange energy?

Wähle eine der folgenden:

heat and mass
heat and work
motion and heat
attraction and work

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Frage 4 von 24

1

Fülle die Lücke, um den Text zu vervollständigen

The energy associated with the motion of an object is its energy.

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Frage 5 von 24

1

Fülle die Lücke, um den Text zu vervollständigen

The energy associated with the position or composition of an object is its energy.

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Frage 6 von 24

1

Fülle die Lücke, um den Text zu vervollständigen

energy, a form of potential energy, is associated with the relative positions of electrons and nuclei in atoms and molecules.

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Frage 7 von 24

1

Fülle die Lücke, um den Text zu vervollständigen

The energy associated with the temperature of an object is its energy.

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Frage 8 von 24

1

The law of conservation of energy, or the first law of thermodynamics, states that energy can be neither created nor destroyed. This means that the total energy of the universe is constant.

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 9 von 24

1

The SI unit of energy is the joule (J). Which of the following is true about this unit?

Wähle eine der folgenden:

1 J = 1 g * m^2 / s^2
1 J = 1 kg * m^2 / s^2
1 J = 1 kg * m / s^2
1 J = 1 kg * m^2 / h^2
1 J = 1 kg * m^2 / s

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Frage 10 von 24

1

Fülle die Lücken, um den Text zu vervollständigen.

Besides joules, a calorie is another commonly used energy unit:
1 cal = J
1 Cal = 1 = cal

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Frage 11 von 24

1

Fülle die Lücken, um den Text zu vervollständigen.

Besides joules, a kilowatt-hour is another unit of energy commonly used for electricity bills:
1 kWh = * J

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Frage 12 von 24

1

The internal energy (E) of a system is the sum of the kinetic and potential energies of all of the particles that compose the system.

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 13 von 24

1

Internal energy is a state function, which means that its value depends only on the state of the system, not on how the system arrived at that state.

Wähle eins der folgenden:

WAHR
FALSCH

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Frage 14 von 24

1

Which of the following is true about a system's energy?

Wähle eine der folgenden:

ΔE(sys) = -ΔE(surr)
2ΔE(sys) = -ΔE(surr)
ΔE(sys) = ΔE(surr)
ΔE(sys) = -3ΔE(surr)
-ΔE(sys) = -ΔE(surr)

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Frage 15 von 24

1

Fülle die Lücken, um den Text zu vervollständigen.

If the reactants have a higher internal energy than the products, ΔE(sys) is and energy flows the system into the surroundings. If the reactants have a lower internal energy than the products, ΔE(sys) is and
energy flows the system from the surroundings.

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Frage 16 von 24

1

Which of the following represents heat?

Wähle eine der folgenden:

H
q
w
ΔE

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Frage 17 von 24

1

Which of the following represents change in internal energy for a given system?

Wähle eine der folgenden:

ΔQ
ΔI
ΔE
ΔH

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Frage 18 von 24

1

Fülle die Lücken, um den Text zu vervollständigen.

ΔE = +

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Frage 19 von 24

1

What is the difference between heat and thermal energy?

Wähle eine der folgenden:

Temperature is a measure of the thermal energy within a sample of matter, whereas heat is the transfer of thermal energy.
Heat is a measure of the thermal energy within a sample of matter, whereas temperature is the transfer of thermal energy.
Temperature is a measure of the total energy within a sample of matter, whereas heat is a measure of temperature change.
Heat is a measure of the total thermal energy within a sample of matter, whereas temperature is a measure of heat change.

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Frage 20 von 24

1

Fülle die Lücken, um den Text zu vervollständigen.

The constant of proportionality between q and ΔT is the system’s heat capacity (C), a measure of the system’s ability to absorb thermal energy without undergoing a large change in temperature. C is defined as the quantity of heat required to change a system's temperature by 1 °C:

q = × Δ

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Frage 21 von 24

1

What is the difference between heat capacity and specific heat capacity?

Wähle eine der folgenden:

Heat capacity is the ratio of the amount of energy absorbed to the associated temperature rise, whereas specific heat capacity is the heat capacity of a substance per unit mass.
Specific heat capacity is the ratio of the amount of energy absorbed to the associated temperature rise, whereas heat capacity is the specific heat capacity of a substance per unit mass.
Heat capacity is the ratio of the amount of energy absorbed, whereas specific heat capacity is the difference in heat capacity.

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Frage 22 von 24

1

Which of the following is true about heat?

Wähle eine der folgenden:

q = m / C(s) × ΔT
q = 2m × C × ΔT
q = m × C(s)
q = m × C(s) × ΔT
q = m × C / ΔT

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Quiz for CHEM 105 - General Chemistry 1 (Fall 2015)

CHEM 105 - General Chemistry 1 (Fall 2015)

Frage 1 von 24

Fülle die Lücken, um den Text zu vervollständigen.

Energy is the to do .

Erklärung

Frage 2 von 24

Fülle die Lücken, um den Text zu vervollständigen.

Work is the result of a acting through a .

Erklärung

Frage 3 von 24

What are the two primary methods through which objects or sets of objects exchange energy?

Wähle eine der folgenden:

Erklärung

Frage 4 von 24

Fülle die Lücke, um den Text zu vervollständigen

The energy associated with the motion of an object is its energy.

Erklärung

Frage 5 von 24

Fülle die Lücke, um den Text zu vervollständigen

The energy associated with the position or composition of an object is its energy.

Erklärung

Frage 6 von 24

Fülle die Lücke, um den Text zu vervollständigen

energy, a form of potential energy, is associated with the relative positions of electrons and nuclei in atoms and molecules.

Erklärung

Frage 7 von 24

Fülle die Lücke, um den Text zu vervollständigen

The energy associated with the temperature of an object is its energy.

Erklärung

Frage 8 von 24

The law of conservation of energy, or the first law of thermodynamics, states that energy can be neither created nor destroyed. This means that the total energy of the universe is constant.

Wähle eins der folgenden:

Erklärung

Frage 9 von 24

The SI unit of energy is the joule (J). Which of the following is true about this unit?

Wähle eine der folgenden:

Erklärung

Frage 10 von 24

Fülle die Lücken, um den Text zu vervollständigen.

Besides joules, a calorie is another commonly used energy unit: 1 cal = J 1 Cal = 1 = cal

Erklärung

Frage 11 von 24

Fülle die Lücken, um den Text zu vervollständigen.

Besides joules, a kilowatt-hour is another unit of energy commonly used for electricity bills: 1 kWh = * J

Erklärung

Frage 12 von 24

The internal energy (E) of a system is the sum of the kinetic and potential energies of all of the particles that compose the system.

Wähle eins der folgenden:

Erklärung

Frage 13 von 24

Internal energy is a state function, which means that its value depends only on the state of the system, not on how the system arrived at that state.

Wähle eins der folgenden:

Erklärung

Frage 14 von 24

Which of the following is true about a system's energy?

Wähle eine der folgenden:

Erklärung

Frage 15 von 24

Fülle die Lücken, um den Text zu vervollständigen.

If the reactants have a higher internal energy than the products, ΔE(sys) is and energy flows the system into the surroundings. If the reactants have a lower internal energy than the products, ΔE(sys) is and energy flows the system from the surroundings.

Erklärung

Frage 16 von 24

Which of the following represents heat?

Wähle eine der folgenden:

Erklärung

Frage 17 von 24

Which of the following represents change in internal energy for a given system?

Wähle eine der folgenden:

Erklärung

Frage 18 von 24

Fülle die Lücken, um den Text zu vervollständigen.

ΔE = +

Erklärung

Frage 19 von 24

What is the difference between heat and thermal energy?

Wähle eine der folgenden:

Erklärung

Frage 20 von 24

Fülle die Lücken, um den Text zu vervollständigen.

Besides joules, a calorie is another commonly used energy unit:
1 cal = J
1 Cal = 1 = cal

Besides joules, a kilowatt-hour is another unit of energy commonly used for electricity bills:
1 kWh = * J

If the reactants have a higher internal energy than the products, ΔE(sys) is and energy flows the system into the surroundings. If the reactants have a lower internal energy than the products, ΔE(sys) is and
energy flows the system from the surroundings.

The constant of proportionality between q and ΔT is the system’s heat capacity (C), a measure of the system’s ability to absorb thermal energy without undergoing a large change in temperature. C is defined as the quantity of heat required to change a system's temperature by 1 °C:

q = × Δ