Heat Matter Lowersixth Science Physics

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Test your understanding of thermal energy and heat capacity.

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YAKILI LMS

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Heat Matter Lowersixth Science Physics


Heat Matter Lowersixth Science PhysicsOnline version Test your understanding of thermal energy and heat capacity. by YAKILI LMS 1 Energy transfer as heat can occur without any temperature difference. Yes No 2 The principle of energy conservation does not apply to open systems. Yes No 3 The kinetic theory of gases does not relate to heat capacities. Yes No 4 Q = mcΔT is valid for a gas at constant pressure only. Yes No 5 Specific heat capacity is the amount of heat required to raise the temperature of 1 kilogram of a substance by 10 degrees Celsius. Yes No 6 In solids and liquids Cp is often close to Cv and their molecular volume changes are small. Yes No 7 Heat capacity describes how much energy is needed to change the volume of a substance by a fixed amount. Yes No 8 The higher the Cp, the more heat is required to raise temperature at constant pressure. Yes No 9 Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius. Yes No 10 Molar heat capacity of a gas is the heat required to raise the temperature of one mole by 1 K. Yes No 11 Cp is the molar heat capacity at constant pressure; Cv is at constant volume. Yes No 12 Heat flow occurs from higher to lower temperature spontaneously. Yes No 13 Energy conservation allows heat to be created during phase changes. Yes No 14 Molar heat capacity is only defined for liquids. Yes No 15 For any gas, Cp is always less than Cv. Yes No 16 Energy conservation means total energy in an isolated system is constant; heat transfer does not create or destroy energy. Yes No 17 Cv depends on pressure for an ideal gas. Yes No 18 Cp and Cv are always equal for all substances regardless of phase. Yes No 19 Cp and Cv are independent of temperature for most solids and liquids. Yes No 20 For ideal gases, Cp = Cv + R. Yes No 21 A higher Cp means less energy is required to raise temperature at constant pressure. Yes No 22 Heat flow occurs from lower to higher temperature spontaneously without energy input. Yes No 23 At constant volume, no work is done by the gas, so Cp and Cv are equal for all gases. Yes No 24 Thermal energy is the total internal energy of the particles in a substance. Yes No 25 The molar heat capacity of a gas is always the same as that of a liquid. Yes No 26 A substance with low specific heat capacity stores more heat for the same temperature rise than one with high specific heat capacity. Yes No 27 The concept of heat capacity is only applicable to solids, not gases. Yes No 28 The units of heat capacity are joules per kelvin per mole (J/(K·mol)) for all cases. Yes No 29 For a monatomic ideal gas, Cv = (3/2)R and Cp = (5/2)R. Yes No 30 A gas's Cp equals the energy needed to raise the temperature of the gas at constant pressure by 1 K for one mole. Yes No 31 Cp > Cv for gases because doing work during expansion requires energy. Yes No 32 Gases have no molar heat capacity at constant pressure. Yes No 33 Low specific heat capacity materials absorb more heat for a given temperature rise. Yes No 34 A substance with high specific heat capacity heats up and cools down faster than one with low capacity. Yes No 35 In solids Cp is always greater than Cv. Yes No 36 Thermal energy is the total internal energy of a system due to microscopic motion. Yes No 37 Heat flow follows the conservation of energy, transferring energy from regions of higher to lower temperature. Yes No 38 Heat flow can violate energy conservation. Yes No 39 The rate of heat flow is independent of the material's thermal conductivity. Yes No 40 The concept of heat capacity does not apply to gases at all. Yes No 41 Molar heat capacity of a gas is always equal to 3R per mole. Yes No 42 Molar heat capacity refers to the amount of heat needed to raise the temperature of 1 mole of a substance by 1 kelvin in any phase. Yes No 43 For ideal gases, Cp > Cv because heating at constant pressure also provides work to expand the gas. Yes No 44 Cp equals Cv for all gases. Yes No 45 Specific heat capacity has units of J/(mol·K). Yes No 46 Heat can spontaneously flow from cold to hot under normal conditions. Yes No 47 Specific heat capacity is the amount of heat required to raise the temperature of 1 liter of a substance by 1 degree Celsius. Yes No 48 Energy conservation does not apply to open systems. Yes No 49 Heat capacity is independent of temperature. Yes No 50 For an ideal gas, Cp − Cv = R, so Cp > Cv. Yes No

Heat Matter Lowersixth Science Physics

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Heat Matter Lowersixth Science PhysicsOnline version

by YAKILI LMS

Energy transfer as heat can occur without any temperature difference.

The principle of energy conservation does not apply to open systems.

The kinetic theory of gases does not relate to heat capacities.

Q = mcΔT is valid for a gas at constant pressure only.

Specific heat capacity is the amount of heat required to raise the temperature of 1 kilogram of a substance by 10 degrees Celsius.

In solids and liquids Cp is often close to Cv and their molecular volume changes are small.

Heat capacity describes how much energy is needed to change the volume of a substance by a fixed amount.

The higher the Cp, the more heat is required to raise temperature at constant pressure.

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

Molar heat capacity of a gas is the heat required to raise the temperature of one mole by 1 K.

Cp is the molar heat capacity at constant pressure; Cv is at constant volume.

Heat flow occurs from higher to lower temperature spontaneously.

Energy conservation allows heat to be created during phase changes.

Molar heat capacity is only defined for liquids.

For any gas, Cp is always less than Cv.

Energy conservation means total energy in an isolated system is constant; heat transfer does not create or destroy energy.

Cv depends on pressure for an ideal gas.

Cp and Cv are always equal for all substances regardless of phase.

Cp and Cv are independent of temperature for most solids and liquids.

For ideal gases, Cp = Cv + R.

A higher Cp means less energy is required to raise temperature at constant pressure.

Heat flow occurs from lower to higher temperature spontaneously without energy input.

At constant volume, no work is done by the gas, so Cp and Cv are equal for all gases.

Thermal energy is the total internal energy of the particles in a substance.

The molar heat capacity of a gas is always the same as that of a liquid.

A substance with low specific heat capacity stores more heat for the same temperature rise than one with high specific heat capacity.

The concept of heat capacity is only applicable to solids, not gases.

The units of heat capacity are joules per kelvin per mole (J/(K·mol)) for all cases.

For a monatomic ideal gas, Cv = (3/2)R and Cp = (5/2)R.

A gas's Cp equals the energy needed to raise the temperature of the gas at constant pressure by 1 K for one mole.

Cp > Cv for gases because doing work during expansion requires energy.

Gases have no molar heat capacity at constant pressure.

Low specific heat capacity materials absorb more heat for a given temperature rise.

A substance with high specific heat capacity heats up and cools down faster than one with low capacity.

In solids Cp is always greater than Cv.

Thermal energy is the total internal energy of a system due to microscopic motion.

Heat flow follows the conservation of energy, transferring energy from regions of higher to lower temperature.

Heat flow can violate energy conservation.

The rate of heat flow is independent of the material's thermal conductivity.

The concept of heat capacity does not apply to gases at all.

Molar heat capacity of a gas is always equal to 3R per mole.

Molar heat capacity refers to the amount of heat needed to raise the temperature of 1 mole of a substance by 1 kelvin in any phase.

For ideal gases, Cp > Cv because heating at constant pressure also provides work to expand the gas.

Cp equals Cv for all gases.

Specific heat capacity has units of J/(mol·K).

Heat can spontaneously flow from cold to hot under normal conditions.

Specific heat capacity is the amount of heat required to raise the temperature of 1 liter of a substance by 1 degree Celsius.

Energy conservation does not apply to open systems.

Heat capacity is independent of temperature.

For an ideal gas, Cp − Cv = R, so Cp > Cv.