Compounds and molecules are built from elements composed of at least two atoms joined with a chemical bond. Learn how elemental personalities build...
正在翻译,请等待... [translate] aesters, one of the most useful classes of organic compounds,are polar molecules but they cannot form strong hydrogen bonds to each other 酯,有机化合物的其中一个最有用的课,是两极的分子但是他们不能形成强氢气债券到彼此 [translate] ...
For one thing, they are complex and giant molecules and are different from low molecular weight compounds like, say, common salt. To contrast the difference, the molecular weight of common salt is only 58.5, while that of a polymer can be as high as several hundred thousand thousands. These...
A. By creating compounds both water-repellent and water-loving. B. By extracting the proteins from some hardy animals. C. By making synthetic alternatives like antifreeze proteins. D. By copying spiral-shaped molecules mostly water-resistant. ...
What are the parts of an atom? What is the Periodic Table? How do atoms make molecules and compounds? What are isotopes? How do atoms make ions? How many atoms are there in something? How do we know atoms exist? A brief history of atoms Find out moreWhat is an atom?Take...
active molecules and ingredients contained in plants or algae, which have an enhancing effect on plant physiology or act as a control agent towards target pests. MINERALS MICROBIALS MACROBIALS compounds of mineral origin that can be used for controlling various categories of pests. * Internal elabor...
aArylboron compounds are invaluable reagents in synthetic organic chemistry1 for constructing diverse functional molecules via Suzuki–Miyaura coupling,2 Petasis reaction,3 etc. While a variety of arylboron compounds can be prepared by a reaction of aryl Grignard reagents (or aryllithiums) wi 正在翻译...
Myth #1: Carrot greens contain alkaloids (which are toxic bitter compounds produced by a plant) and all alkaloids are bad because substances like caffeine and cocaine are alkaloids. Myth #2: Carrots are related to Queen Anne's lace and hemlock, which are poisonous. ...
aSulfur molecules with high electronic density on the sulfur atom are expected to have high reactivity. Ma et al. Classified different heterocyclic sulfur compounds on the basis of the electron density on the S atom.34 According to their calculations: (a) The electron density for the unsaturated...
he and his colleagues synthesized spiral-shaped molecules that were mostly water-repellent-but had iron atoms at their centers that made them hydrophilic,or water-loving.The resulting compounds were surprisingly effective at stopping ice crystals from forming.Some were also harmless...