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molecule
has definitions from the fields of chemistry,physics
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[ noun ] (physics and chemistry) the simplest structural unit of an element or compound
Used in print (Frank Oppenheimer, "Science and Fear-- A Discussion...)Will advances in human sciences help us build social_structures and governments which will enable us to cope_with people as_effectively_as the primitive combination of protein and nucleic_acid built a structure of molecules which enabled it to adapt to a sea of molecular interaction ? (Jay C. Harris and John R. Van Wazer, "Detergent...)As_is well_known , detergent actives belong_to the chemical class consisting_of moderately high molecular_weight and highly polar molecules which exhibit the property of forming micelles in solution . Related_to micelle formation is the technologically important ability of detergent actives to congregate at oil_water_interfaces in such a manner that the polar ( or ionized ) end of the molecule is directed towards the aqueous phase and the hydrocarbon chain towards the oily phase . (Francis J. Johnston and John E. Willard, "The...)It appears possible to set a lower_limit of about * * f for the activation_energy of the abstraction of a chlorine atom from a carbon_tetrachloride molecule by a chlorine atom to form * * f radical . Because of the simplicity of the molecules , isotopic exchange reactions between elemental halogens and the corresponding carbon_tetrahalides would appear to offer particularly fruitful possibilities for obtaining unambiguous basic kinetic data . Related terms substance unit protein_molecule coenzyme macromolecule dipole_molecule atom group chain physics chemistry |
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