This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...acquires when it changes from a solid to a liquid, and which it gives up again in the kinetic form of heat when it changes back to a solid. This principle was illustrated in the freezing of ice-cream. The temperature of the freezing-mixture does not increase although the temperature of the substance ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...acquires when it changes from a solid to a liquid, and which it gives up again in the kinetic form of heat when it changes back to a solid. This principle was illustrated in the freezing of ice-cream. The temperature of the freezing-mixture does not increase although the temperature of the substance frozen decreases greatly; the heat withdrawn from the cream is used in the change of ice and salt to liquid; it is "stored" in this liquid; it has become potential rather than kinetic. You have also learned that the temperature of boiling water does not increase no matter how much heat is applied to it, for the heat is used in the transformation of molecules from the state of liquid to the state of gas. We can demonstrate this principle even more simply and clearly by placing in different vessels equal amounts of ice and water, and applying to them equal amounts of heat. In the case of the ice, the temperature of the water which results from its melting will not rise until all the ice is melted; all the heat applied is being consumed in overcoming the solidity of the ice; it ceases to be heat, having been expended in the work necessary for changing a solid to a liquid. But in the case of the water, its temperature will begin to rise from the moment that the heat is applied. By the time that the ice in the other vessel is all melted, the water, to which no more than an equal amount of heat is being applied, will have increased in temperature 8o C. This gives a simple means for computing the amount of heat consumed in the changing of ice to water; the amount of heat involved in changing any solid to a liquid (or the reverse) is called the heat offusion of the substance. The heat of fusion of ice is eighty calories; i. e., eighty...
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Add this copy of Elementary Science to cart. $61.07, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Santa Clarita, CA, UNITED STATES, published 2016 by Palala Press.
