The International Union of Pure and Applied Chemistry (IUPAC) definition of adsorption is: "Adsorption vs. Absorption Adsorption is a surface phenomenon in which particles or molecules bind to the top layer of material. Absorption, on the other hand, goes deeper, involving the entire volume of t...
In chemistry, a hydration reaction is a chemical reaction in which a substance combines with water. In organic chemistry, water is added to an unsaturated substrate, which is usually an alkene or an alkyne. This type of reaction is employed industrially to produce ethanol, isopropanol, and ...
Because thephysical properties of enantiomers are identical, they seldom can be separated by simple physical methods, such as fractional crystallization or distillation. Who is the father of stereochemistry? Winner of the first Nobel Prize in Chemistry in 1901,van't Hoffwas a pioneer in the field ...
What does this mean: change in enthalpy of vaporization > temperature multiplied by change in entropy of vaporization? What is the condensation point of water in Kelvin? The heat of vaporization of water is 540 cal/g. How much heat is needed to change 3.07 g of water to steam?
What is the rate of crystallization? What metal is usually extracted from sea water? Smelting is the process by which a metal ore is reduced. In this context, what does the term reduced mean? Why does transmutation occur? What happens in the artificial transmutation of an element? Give an ...
What is viscosity in chemistry? What is the Tyndall effect? What does the Tyndall effect test for? What is Newtonian fluid? What is an oil drop cataract? What is a stigmatism? What is dispersion? What is a blue dot cataract? What is a colloid?
(chemistry) A component of a mixture, separated by fractionation. Ratio (arithmetic) The relative magnitudes of two quantities (usually expressed as a quotient). Fraction (Christianity) In a eucharistic service, the breaking of the host. Ratio (legal) ratio decidendi Fraction A small amount. Rat...
Marketing Elkem Products Others Fused silica Our fused silica products are sold under the classification of FS-99 in grades A, B and C, supplied according to customer specifications and needs. Please contact Elkem specialists or sales representative, who will advise and assist you in finding the ...
How does the appearance of the impure solid acetanilide change in recrystallization? What is the effect of impurities on boiling point? Why should samples for melting point determination be finely powdered? What is the disadvantage of crystallization over evaporation? Why shoul...
However, we need to consider that we must pick the right solvent for certain chemical reactions because solvents can also participate in the interaction of the compounds or reactants used for the reaction. In line with the field of organic chemistry, there are protic solvents and aprotic ...