Liquids
A liquid is a state of matter intermediate between a solid and a gas. A liquid, at constant temperature can readily change its shape (like a gas but unlike a solid) but it is incapable of chan...
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Liquid Gases, Commercial Production Of
The ordinary air we breathe contains several gases which are of great value to industry and science. Oxygen, for example, is essential in making steel, and heliu...
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Liquids
Liquid Gases, Commercial Production Of