in onedirection.•Thecrystallinepostis controlled by specialbondchemistryunder controlled processconditions.•Naturallyoccurringcrystallinesolidsare calledminerals.•For example, the bacteriumBacillusthuringiensis has theabilityto producecrystallinesporeswhich act asnaturalinsecticides.•Thisimperfectdistributionof ...
It is a very nearly black crystalline solid that can turn to a deep violet, irritating vapor. In nature it is never found uncombined, and occurs mostly in brines and seaweeds. Dietary iodine is essential for thyroid gland function, so table salt usually has potassium iodide added to prevent ...
- In organic chemistry, organic peroxides are organic compounds containing the peroxide functional group (R−O−O−R′). If the R′ is hydrogen, the compounds...- Hydrogen peroxide–urea (also called Hyperol, artizone, urea hydrogen peroxide, and UHP) is a white crystalline solid ...
Chemistry, Mineralogy.a solid body having a characteristic internal structure and enclosed by symmetrically arranged plane surfaces, intersecting at definite and characteristic angles. anything made of or resembling such a substance. a single grain or mass of a crystalline substance. ...
Guanidine definition: a colorless, crystalline, strongly alkaline, water-soluble solid, CH5N3, used chiefly in the manufacture of plastics, resins, rubber accelerators, and explosives.. See examples of GUANIDINE used in a sentence.
Additionally, crystals in powdered or fine-grained forms are hazardous if inhaled. Inhaling grains of crystals can irritate and damage the lungs and airways. How do you identify dolomite? Dolomite can be identified by its crystalline structure, luster, hardness, and cleavage. Dolomite crystals can ...
1 : a crystalline sugar C6H12O6 sweeter and more soluble than glucose 2 : the very sweet levorotatory d-form of fructose that occurs especially in fruit juices and honey called also fruit sugar, levulose Examples of fructose in a Sentence Recent Examples on the Web When worker bees ...
DislocationA linear imperfection in a crystalline array of atoms. Two basic types are recognized: (1) an edge dislocation corresponds to the row of mismatched atoms along the edge formed by an extra, partial plane of atoms within the body of a crystal; (2) a screw dislocation corresponds to...
In addition, surface passivation ofgermaniumhas proven extremely difficult. These reasons makegermaniuman unlikely candidate for use in TPVs. Meaning noun. a brittle grey crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors; occurs in germanite and argyrodite ...
This mineral is certainly a unique variety of micro-crystallinequartz of translucent nature. When agates are of high quality and impressive, they are treated as precious stones. The formation of agates is due to the deposition of silica from groundwater in igneous rocks cavities. ...