| 词汇 | alkaline-earth-metal |
| 释义 | alkaline earth metal noun[ C ] uk /ˌæl.kəl.aɪn ˈɜːθ ˌmet.əl/ us /ˌæl.kəl.aɪn ˈɝːθ ˌmet̬.əl/(alsoalkaline earth, uk /ˌæl.kəl.aɪn ˈɜːθ / us /ˌæl.kəl.aɪn ˈɝːθ /) chemistry specialized any of the chemical elements beryllium, magnesium, calcium, strontium, barium, and radium. They react easily with other substances. 碱土金属 Chemicals, chemical compounds & gases acetic acid acetone acrolein acrylamide activated charcoal adenine agglomerate ethyl alcohol H2O HCFC HFC hyaluronic acid hydrochloric acid hydrochlorofluorocarbon laughing gas limescale metho meths oxyacetylene tartaric acid Examples of alkaline earth metalalkaline earth metal The s-block comprises the first two groups (alkali metals and alkaline earth metals) as well as hydrogen and helium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Finding a group 2 alkalineearthmetal was problematic, because it did not logically fit with the other elements found thus far. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The alkalineearthmetal calcium is also present in significant quantity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An alkalineearthmetal, strontium is a soft silver-white or yellowish metallic element that is highly reactive chemically. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is an alkalineearthmetal, a relatively reactive group, although not nearly as reactive as the alkali metals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some sources will even say the alkalineearthmetal hydroxides are insoluble. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is not possible to determine trends for the alkalineearthmetal salts, as many of them can not be formed. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As a free element it is a steel-gray, strong, lightweight and brittle alkalineearthmetal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As with magnesium salts and other alkalineearthmetal salts, calcium salts are often quite soluble in water. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The difference between a basic salt and an alkali is that an alkali is the soluble hydroxide compound of an alkali metal or an alkalineearthmetal. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Concerning the existence of alkaline earth metals resulting from neutron irradiation of uranium. Note that only hydroxides with an alkali metal column 1 are very soluble in water; hydroxides with an alkalineearthmetal column 2 are not as soluble. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. All the alkaline earth metals except beryllium also react with water to form strongly alkaline hydroxides and, thus, should be handled with great care. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The heavier alkaline earth metals react more vigorously than the lighter ones. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The resulting fluorides are reduced with alkaline earth metals or alloys of the metals; metallic calcium is used most frequently. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. See all examples of alkaline earth metal These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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