. Essentials of medical and clinical chemistry. With laboratory exercises . (Fig. 8), and decomposing it into potassium chloride and oxygen,thus : KC103 = KC1 + Physical Properties.—A colorless, odorless and tasteless gas, alittle heavier ( times) than air. Under a pressure of and at a temperature of —136 C, it condenses into 17 Grind in a mortar some potassium chlorate with half as much manganesedioxide, a black powder that facilitates the evolution of the oxygen. Heat this10 a side-neck test-tube as in Fig. 8, or in an open test-tube. Recognize theoxygen by the ener
. Essentials of medical and clinical chemistry. With laboratory exercises . (Fig. 8), and decomposing it into potassium chloride and oxygen,thus : KC103 = KC1 + Physical Properties.—A colorless, odorless and tasteless gas, alittle heavier ( times) than air. Under a pressure of and at a temperature of —136 C, it condenses into 17 Grind in a mortar some potassium chlorate with half as much manganesedioxide, a black powder that facilitates the evolution of the oxygen. Heat this10 a side-neck test-tube as in Fig. 8, or in an open test-tube. Recognize theoxygen by the energetic combustion when a match, or even the glowring endof the charred stick is introduced. Note.—Experiments 18, 19 and 20 are to be performed by the instructor. 22 ESSENTIALS OF CHEMISTRY. Fig. Fig. 10. a colorless liquid (sp. gr. of ). Water dissolves only threevolumes to the hundred, but this is enough to sustain aquatic Properties,—Intense affinities ; combines with everyelement except fluorine. The productof its action is called an oxide, and theprocess oxidation. Oxidation so rapid asto produce heat and light is called com-bustion; if nolight, slow com-bustion. Sub-stances thatburn in airburn more bril-liantly in oxygen,18 and many sub-stances that do not burn in air willburn in this By this propertyoxygen is usually recognized and dis-tinguished from most other gases. Oxygen, especially in its dilutedform (air), is the great supporter ofcombustion, for which its abundanceand universal presence eminently fit and supporter of com-bustion are only relative terms. Whena combustible substance burns in a supporter of combustion the union is mutual, one being as mucha party to the action as the other. A jet of air or oxygen burns KAL
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