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What is internal energy of a substance?

Updated: 9/22/2023
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Q: What is internal energy of a substance?
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The sum of the kinetic and potential energy of the molecules of a substance?

thermal


What else beside molecular kinetic energy contributes to the internal energy of a substance?

according to Einstein. E=MC2. Where: E: energy M: mass C: the speed of light. therefore, the mass of said substance dictates its internal energy.


Define internal energy?

Total amount of kinetic energy and potential energy of all the particles in a substance.


Which type of energy makes up most of the internal energy of a solid substance?

Potential energy from intermolecular forces


How is the thermal energy of a substance related to it physical state?

The thermal energy of a substance determines its state, since thermal energy, aka internal energy, is the energy the molecules in the substance have. If the energy exceeds the force holding the substance together the substance undergoes a phase change.The physical state of a substance is related to its temperature, the measure of thermal energy. The substance can change states depending on the temperature, e.g. boiling.


How is the thermal energy of a substance related to its state?

The thermal energy of a substance determines its state, since thermal energy, aka internal energy, is the energy the molecules in the substance have. If the energy exceeds the force holding the substance together the substance undergoes a phase change.The physical state of a substance is related to its temperature, the measure of thermal energy. The substance can change states depending on the temperature, e.g. boiling.


How is thermal energy of a substances related to its physical state?

The thermal energy of a substance determines its state, since thermal energy, aka internal energy, is the energy the molecules in the substance have. If the energy exceeds the force holding the substance together the substance undergoes a phase change.The physical state of a substance is related to its temperature, the measure of thermal energy. The substance can change states depending on the temperature, e.g. boiling.


What does the temperature tell you about the particles of a substance?

Temperature is the measure of the internal kinetic energy of a body.


What Explain what happens to the average kinetic energy, thermal energy, and temperature of a substance when the particles in the substance slow down.?

The particles in a substance slow down when the average kinetic energy of the particles decreases. As the average kinetic energy decreases, the internal energy decreases, and so the thermal energy decreases. As the thermal energy of the substance decreases, the temperature decreases.


What is it called the total kinetic energy of the particles in a substance?

internal energy measures the total energy of the particles in a substance


What energy forms is the sum of kinetic energy and all forms of potential energy?

What you stated is true for an OBJECT. The energy contained in the 'Substance' that the Object is made of includes its "Atomic Energy", and its Chemical Energy.


What source of energy does an internal combustion engine use?

Chemical energy, stored in the gasolene or a similar substance. This, in turn, is first converted into heat.Chemical energy, stored in the gasolene or a similar substance. This, in turn, is first converted into heat.Chemical energy, stored in the gasolene or a similar substance. This, in turn, is first converted into heat.Chemical energy, stored in the gasolene or a similar substance. This, in turn, is first converted into heat.