CHEM 105 - General Chemistry 1 (Fall 2015)

Pregunta 1 de 24

1

Rellena los espacios en blanco para completar el texto.

Energy is the to do .

Explicación

Pregunta 2 de 24

1

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Work is the result of a acting through a .

Explicación

Pregunta 3 de 24

1

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 4 de 24

1

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

Explicación

Pregunta 5 de 24

1

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

Explicación

Pregunta 6 de 24

1

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

Explicación

Pregunta 7 de 24

1

Rellena el espacio en blanco para completar el texto.

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

Explicación

Pregunta 8 de 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.

Selecciona uno de los siguientes:

VERDADERO
FALSO

Explicación

Pregunta 9 de 24

1

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 10 de 24

1

Rellena los espacios en blanco para completar el texto.

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

Explicación

Pregunta 11 de 24

1

Rellena los espacios en blanco para completar el texto.

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

Explicación

Pregunta 12 de 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.

Selecciona uno de los siguientes:

VERDADERO
FALSO

Explicación

Pregunta 13 de 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.

Selecciona uno de los siguientes:

VERDADERO
FALSO

Explicación

Pregunta 14 de 24

1

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

Selecciona una de las siguientes respuestas posibles:

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

Explicación

Pregunta 15 de 24

1

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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.

Explicación

Pregunta 16 de 24

1

Which of the following represents heat?

Selecciona una de las siguientes respuestas posibles:

H
q
w
ΔE

Explicación

Pregunta 17 de 24

1

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

Selecciona una de las siguientes respuestas posibles:

ΔQ
ΔI
ΔE
ΔH

Explicación

Pregunta 18 de 24

1

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ΔE = +

Explicación

Pregunta 19 de 24

1

What is the difference between heat and thermal energy?

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 20 de 24

1

Rellena los espacios en blanco para completar el texto.

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

Explicación

Pregunta 21 de 24

1

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

Selecciona una de las siguientes respuestas posibles:

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.

Explicación

Pregunta 22 de 24

1

Which of the following is true about heat?

Selecciona una de las siguientes respuestas posibles:

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

	Creado por Vinh Le hace más de 8 años

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

CHEM 105 - General Chemistry 1 (Fall 2015)

Pregunta 1 de 24

Rellena los espacios en blanco para completar el texto.

Energy is the to do .

Explicación

Pregunta 2 de 24

Rellena los espacios en blanco para completar el texto.

Work is the result of a acting through a .

Explicación

Pregunta 3 de 24

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 4 de 24

Rellena el espacio en blanco para completar el texto.

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

Explicación

Pregunta 5 de 24

Rellena el espacio en blanco para completar el texto.

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

Explicación

Pregunta 6 de 24

Rellena el espacio en blanco para completar el texto.

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

Explicación

Pregunta 7 de 24

Rellena el espacio en blanco para completar el texto.

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

Explicación

Pregunta 8 de 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.

Selecciona uno de los siguientes:

Explicación

Pregunta 9 de 24

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 10 de 24

Rellena los espacios en blanco para completar el texto.

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

Explicación

Pregunta 11 de 24

Rellena los espacios en blanco para completar el texto.

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

Explicación

Pregunta 12 de 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.

Selecciona uno de los siguientes:

Explicación

Pregunta 13 de 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.

Selecciona uno de los siguientes:

Explicación

Pregunta 14 de 24

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 15 de 24

Rellena los espacios en blanco para completar el texto.

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.

Explicación

Pregunta 16 de 24

Which of the following represents heat?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 17 de 24

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

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 18 de 24

Rellena los espacios en blanco para completar el texto.

ΔE = +

Explicación

Pregunta 19 de 24

What is the difference between heat and thermal energy?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 20 de 24

Rellena los espacios en blanco para completar el texto.

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