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      • It does not matter if a substance melts, freezes, boils, evaporates, condenses or sublimates, the mass does not change. These changes in state are called physical changes because the processes can be reversed (eg cooling instead of heating). This is different to the changes seen in a chemical reaction when the changes cannot be reversed so easily.
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  2. Jun 6, 2015 · In the modern way of viewing things, no, (rest) mass is invariant. What happens is that the energy content of the body changes and some people still interpret this as a change in mass (which is an old point of view that, unfortunately, is fairly common). A nice discussion about this can be found here:

  3. The quantitative relationship between heat transfer and temperature change contains all three factors: Q = mcΔT, where Q is the symbol for heat transfer, m is the mass of the substance, and ΔT is the change in temperature. The symbol c stands for specific heat and depends on the material and phase.

  4. Dec 12, 2014 · Yes, when we heat an object its mass increases. The complete equation is $$E^2=(pc)^2 + (mc^2)^2$$ And from this equation if a system has zero momentum (p=0), then it has energy $E=mc^2$

  5. Observe heat transfer and change in temperature and mass. Calculate final temperature after heat transfer between two objects. One of the major effects of heat transfer is temperature change: heating increases the temperature while cooling decreases it.

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    The pan and the water are always at the same temperature. When you put the pan on the stove, the temperature of the water and the pan is increased by the same amount. We use the equation for the heat transfer for the given temperature change and mass of water and aluminum. The specific heat values for water and aluminum are given in Table 1.

    Because water is in thermal contact with the aluminum, the pan and the water are at the same temperature. Calculate the temperature difference: ΔT = Tf − Ti= 60.0ºC. Calculate the mass of water. Because the density of water is 1000 kg/m3, one liter of water has a mass of 1 kg, and the mass of 0.250 liters of water is mw= 0.250 kg. Calculate the hea...

    In this example, the heat transferred to the container is a significant fraction of the total transferred heat. Although the mass of the pan is twice that of the water, the specific heat of water is over four times greater than that of aluminum. Therefore, it takes a bit more than twice the heat to achieve the given temperature change for the water...

  6. Learning Objectives. Observe heat transfer and change in temperature and mass. Calculate final temperature after heat transfer between two objects. One of the major effects of heat transfer is temperature change: heating increases the temperature while cooling decreases it.

  7. Observe heat transfer and change in temperature and mass. Calculate final temperature after heat transfer between two objects. One of the major effects of heat transfer is temperature change: heating increases the temperature while cooling decreases it.

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