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"It is the second hardest metal we know it is not as hard as chromium, but far less brittle. It is malleable, ductile, very very strong, very tough, especially when alloyed with iron, but those alloys are used only in very particular work because of iron's rarity." Indicating the bluish block, Arcot said, "I'd like to identify this element. May I take it back to the ship and test it?"
The volcanoes we shot three months ago yielded a fine flow of lava with all sorts of metals nickel, beryllium, vanadium, chromium, iridium, as well as copper and iron." "What sort of gas were you speaking about?" she asked. "Hydrogen. That's what's going to make the fireworks; it combines explosively with fluorine.
"Some scientific men," replied Sumichrast, "look upon them as fragments of planets wandering in space. Getting entangled in our planetary system, they yield to the attraction of our globe, and fall on to its surface in obedience to the law of gravitation." "But what are they composed of?" "Generally speaking, of sulphur, chromium, and earth.
In September, 1871, Young drew up at Dartmouth College a list of 103 lines significant of injections into the chromosphere of iron, titanium, chromium, magnesium, and many other substances.
"Bullard; Master Pilot, First Class; Number U.S. 1; calling Doctor Roche at Allied Observatory, Mount Everest. Micro-wave, please, and connect through for telefoto-projection." A few breathless seconds passed, while Chet aimed an instrument of gleaming chromium and glass, whose cable connections vanished in the phone panel recess.
Paramagnetic Diamagnetic Iron Bismuth Nickel Phosphorus Cobalt Antimony Aluminium Zinc Manganese Mercury Chromium Lead Cerium Silver Titanium Copper Platinum Water Many ores and Alcohol salts of the Tellurium above metals Selenium Oxygen Sulphur Thallium Hydrogen Air We have theories of magnetism that reduce it to a phenomenon of electricity, though we are ignorant of the real nature of both.
I place the yellow fabric in boiling lime-water, when it is coloured or dyed orange. In each little tubular cotton fibre the same change goes on as went on in the glass vessel, and as the tube or glass vessel looks orange, so does the fabric, because the cotton fibres or tubes are filled with the orange chromium compound.
!Answer!: 34.8 cc. !Answer!: 0.85 cc. How many cubic centimeters of a solution of potassium bichromate containing 26.30 grams of K Cr O per liter must be taken in order to yield 0.6033 gram of Cr O after reduction and precipitation of the chromium? !Answer!: 44.39 cc. !Answer!: 4.74 cc. !Answer!: 6.99 grams.
The amount of the oxide of chromium found by many chemists varies from one to two per cent., while Lewy and others found it in a quantity so small as to be inappreciable, and too minute to be weighed.
Carbon is a constant element in steel, as it is in cast iron, but is frequently replaced by chromium, titanium, etc., or is said to be, though it is not quite clear to me how it can be so if steel is a chemical compound.
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