Indestructibility
المؤلف:
GEORGE A. HOADLEY
المصدر:
Essentials of Physics
الجزء والصفحة:
P-16
2025-10-19
510
Matter can be made to assume different forms as the result of physical changes, and it can be combined with other matter, or broken up into different kinds of matter, through chemical forces; but matter itself cannot be destroyed.
The disappearance of visible matter in the boiling away of water is only a change from the liquid to the vaporous condition.
If, after burning a piece of coal, all the products of the combustion (both solids and gases) are carefully weighed, it is found that the sum of their weights is the same as the weight of the coal and the oxygen used up in the combustion.
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