| 单词 | copper oxide |
| 例句 | The acetic acid in ketchup effectively breaks down the copper oxide that forms when you burn food, so you can use the condiment to clean up burnt pans. Don't toss that burnt pan! Here's how to clean it 2021-09-02T04:00:00Z A quantum leap forward came in early 1986, when they created lanthanum barium copper oxide, a ceramic that became superconductive at about minus 400 degrees Fahrenheit. K. Alex Müller, Innovator in Ceramic Superconductors, Dies at 95 2023-01-18T05:00:00Z He suspects the water reacts with the copper to form a “distorted” copper oxide crystal along with free hydrogen, which is either released or absorbed into the copper. Finland built this tomb to store nuclear waste. Can it survive for 100,000 years? 2022-02-23T05:00:00Z One problem with cuprates, such as yttrium barium copper oxide, is that they are a jumble of elements that proves difficult to model. How ‘magic angle’ graphene is stirring up physics 2019-01-01T05:00:00Z One of the best studied is a cheap, plentiful mix of copper and oxygen called copper oxide. Cheap catalysts turn sunlight and carbon dioxide into fuel 2017-06-06T04:00:00Z The technique revealed something surprising: countless tiny, bristle-like rods of copper oxide scattered throughout the interior of the amulet. This 6,000-year-old amulet is the oldest example of a technology still used by NASA 2016-11-15T05:00:00Z Near Oak Forest: International Paint, which can store an equal amount of flammable copper oxide. Hazardous chemicals post secret threat to Texas neighbors 2016-05-12T04:00:00Z Down a path of crushed stone leading to the cafeteria, the site is peppered with circle-shaped patterns made up of bluish-green rocks—a telltale sign of the presence of copper oxide. Solar Power Lights the Way to a Cleaner Economy in Chile 2015-10-08T04:00:00Z A thin shell made up of a high-temperature superconducting material called yttrium barium copper oxide lined the inner cylinder, bending the magnetic field that traveled through the interior. Magnetic Wormhole Created in Lab 2015-08-21T04:00:00Z Instead of splitting mostly water—like the copper oxide catalyst—the new catalyst generated almost pure CO. Cheap catalysts turn sunlight and carbon dioxide into fuel 2017-06-06T04:00:00Z Those early copper oxides hardened into the microscopic bristles in the amulet's interior. This 6,000-year-old amulet is the oldest example of a technology still used by NASA 2016-11-15T05:00:00Z Each fiber is carefully embedded with skin-smoothing copper oxide, aiding in the reduction of fine lines and wrinkles. Cream Spirit: The 11 Best Skincare Gifts to Buy This Season 2014-12-09T05:00:00Z First, he said, he heated the copper wire to create what he described as fuzzy "nano-whiskers," which are naturally insulated by copper oxide. Copper wires may also work as batteries, Florida researchers say 2014-06-05T04:00:00Z As controls, the scientists also tested larger copper oxide particles and copper ions. Green Blog: Study Links Plant Damage to Nanoparticles 2012-04-24T11:23:44Z To do so, they remade their electrode from copper oxide nanowires, which have a high surface area for carrying out the CO2-breaking reaction, and topped them with a single atom-thick layer of tin. Cheap catalysts turn sunlight and carbon dioxide into fuel 2017-06-06T04:00:00Z Copper gives a peacock-blue which becomes green if the proportion of the copper oxide is increased. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z A zinc plate is suspended on each side of the copper oxide element and kept from coming in contact with the latter by means of vulcanite buttons. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z In colouring it will be found that combinations of cobalt, iron, and copper oxides give an interesting range of simple blues or greens; iron and manganese browns; and so forth. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z And radishes took up significantly more copper from the nanoparticles than from larger copper oxide particles. Green Blog: Study Links Plant Damage to Nanoparticles 2012-04-24T11:23:44Z The copper or any superficial coating of copper oxide which may have been present on the metal, undoubtedly affected the result to some extent. Paint Technology and Tests 2011-09-15T02:00:12.263Z If it be necessary to determine the absolute amount of carbon and hydrogen in a fuel, the dried sample is treated with copper oxide as in the ordinary estimation of these elements in organic compounds. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The hydrogen liberated by the decomposition of the water reduces the copper oxide to pure metallic copper. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z Used with various combinations of cobalt oxide, copper oxide, and iron oxide and copper carbonate, giving wide range of blues and greens. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z Radish seedlings exposed to copper oxide nanoparticles developed twice as many lesions, on multiple DNA bases, as radishes that were exposed to larger copper oxide particles. Green Blog: Study Links Plant Damage to Nanoparticles 2012-04-24T11:23:44Z The principal problem then was that the team's copper oxide materials were brittle ceramics, not amenable to being turned into wires. Super discovery 2011-04-18T11:50:24Z Silica is easily attacked by alkalis and by lime, less readily by copper oxide, and still less by iron oxide. The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame For the use of chemical and physical students Other precipitants such as sulphuretted hydrogen and solutions of sulphides, which precipitate the copper as sulphides, and milk of lime, which gives copper oxides, have not met with commercial success. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" Qualitative.—Carbon is detected by the formation of carbon dioxide, which turns lime-water milky, and hydrogen by the formation of water, which condenses on the tube, when the substance is heated with copper oxide. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The base and roots are sprayed with a sticker compound and then dusted with copper oxide and copper sulfate before the soil is replaced. Northern Nut Growers Association Report of the Proceedings at the 44th Annual Meeting Rochester, N.Y. August 31 and September 1, 1953 The concentrated ore is then mixed with carbon and heated in a furnace, metallic copper resulting from the reduction of the copper oxide by the hot carbon. An Elementary Study of Chemistry It is a compound of white arsenic, copper oxide, and acetic acid. Apple Growing Also, however slowly the calcination may be conducted, there is always more or less copper sulphide left unchanged, and some copper oxide formed. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" If all the connexions are sound, the copper oxide is gradually heated from the end a, the gas-jets under the spiral d are lighted, and a slow current of oxygen is passed through the tube. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Dry, burn the paper with the precipitate, treat with a drop or two of nitric acid, ignite, and weigh as copper oxide. A Text-book of Assaying: For the Use of Those Connected with Mines. B is a glass tube containing copper oxide. An Elementary Study of Chemistry "I do indeed, and with copper oxide too." The Poor Plutocrats But as the slag carries on an average 46% of silica, it is only through the utmost skill that it can be made to run as low on an average as 0.3% in copper oxide. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" Substances which burn with difficulty may be mixed with mercuric oxide in addition to copper oxide. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Filter this off, wash with hot water, dry, calcine, treat with a little nitric acid, ignite, and weigh as copper oxide, CuO. A Text-book of Assaying: For the Use of Those Connected with Mines. The loss of weight in the tube B will exactly equal the weight of oxygen taken up from the copper oxide in the formation of the water. An Elementary Study of Chemistry With substances containing halogens, it is advisable to place, after the copper oxide tube, a small washing flask containing potassium iodide solution. Scientific American Supplement, No. 794, March 21, 1891 In the Edison cell the copper oxide is in the form of a compressed slab which with its connecting copper support forms the electrode. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. F. Beilstein determines their presence by heating the substance with pure copper oxide on a platinum wire in the Bunsen flame; a green coloration is observed if halogens be present. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Put in the weighed portion for assay and a little fresh copper oxide, and mix in the tube by means of an iron wire shaped at the end after the manner of a corkscrew. A Text-book of Assaying: For the Use of Those Connected with Mines. Thus, if carbon monoxide is passed over hot copper oxide, the copper is reduced to the metallic state: CuO + CO = Cu + CO2. An Elementary Study of Chemistry At the bottom the inlet tube dips into a layer of copper oxide asbestos, on the top of which is a layer of reduced copper asbestos. Nitro-Explosives: A Practical Treatise In the Gordon and other cells of this type the copper oxide is contained loosely in a perforated cylinder of sheet copper. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. The oxidizing agent in commonest use is copper oxide, which must be freshly ignited before use on account of its hygroscopic nature. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Fill the combustion tube to a depth of about eight inches with some copper oxide, which has been recently ignited and cooled in a close vessel. A Text-book of Assaying: For the Use of Those Connected with Mines. E is a hard-glass tube containing 1 or 2 g. of copper oxide, which is heated by a burner. An Elementary Study of Chemistry One of the sarsen stones is stained with copper oxide, and this fact has been taken to point to Stonehenge being erected somewhere in the Bronze Age—that is, not longer ago than 2000 B.C. Wanderings in Wessex An Exploration of the Southern Realm from Itchen to Otter In all of these the negatively charged element is of zinc, the positively charged element a mass of copper oxide, and the electrolyte a solution of caustic potash in water. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. It is difficult to obtain in a pure state, as the solutions are readily subject to slight decomposition, accompanied by a small deposit of copper oxide. Scientific American Supplement, No. 447, July 26, 1884 The copper combines with the oxygen to form copper oxide, which is a solid. An Elementary Study of Chemistry The black copper oxide is reduced to reddish metallic copper by the carbon monoxide, which is thereby changed to carbon dioxide. An Elementary Study of Chemistry At the same time that the copper oxide is reduced it is clear that the hydrogen is oxidized, for it combines with the oxygen given up by the copper oxide. An Elementary Study of Chemistry In this experiment the copper oxide is said to undergo reduction. An Elementary Study of Chemistry A slow current of pure hydrogen is then passed through A, and that part of the tube B which contains copper oxide is carefully heated. An Elementary Study of Chemistry |
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