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By Padma Rajagopalan

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Extra resources for Fascinating World of Insects and Animals

Sample text

Among the quasistates of matter discussed by scientists are several terms describing the structure in which particles are joined, rather than the attraction and relative movement of those particles. ” Q UAS I - S TAT E S .

HOW IT WORKS VOLUME AND DENSITY DEF I N E D . Volume, then, is measured in terms of length, and can be defined as the amount of three-dimensional space an object occupies. 10237 • 10–2 in3. As its name implies, there are 1,000 milliliters in a liter. Density is the ratio of mass to volume—or, to put its definition in terms of fundamental properties, of mass divided by cubed length. Density can also be viewed as the amount of matter within a given area. 42197 pounds per cubic foot in the English system.

If, on the other hand, the amount of water displaced were somewhere between the values for pure gold and pure lead, one could calculate what portion of the item was gold and which lead. It is possible, of course, that it could contain some other metal, but given the high specific gravity of lead, and the fact that its density is relatively close to that of gold, lead is a favorite gold substitute among jewelry counterfeiters. S P E C I F I C G RAV I T Y A N D T H E D E N S I T I E S O F P L A N E T S .

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