Related Words

Absorbed: Used in context of general equities. Securities are 'absorbed' as long as there are corresponding orders to buy and sell. The market has reached the absorption point when further assimilatio . . . View Full Definition

Enthalpy Of Solution: The heat absorbed or released when a solute is dissolved in a solvent. The heat of solution depends on the nature of the solute and on its concentration in the final solution.

Excited State: An atom or molecule which has absorbed energy is said to be in an excited state. Excited states tend to have short lifetimes; they lose energy either through collisions or by emitting photon . . . View Full Definition

Hesss Law: The heat released or absorbed by a process is the same no matter how many steps the process takes. For example, given a reaction A rightarrow B, Hess's law says that deltah for the reaction . . . View Full Definition

Infrared Spectroscopy: A technique for determining the structure (and sometimes concentration) of molecules by observing how infrared radiation is absorbed by a sample.

Enthalpy Of Reaction: The heat absorbed or released by a chemical reaction running at constant pressure.

Enthalpy: Enthalpy (H) is defined so that changes in enthalpy (deltah) are equal to the heat absorbed or released by a process running at constant pressure. While changes in enthalpy can be measured u . . . View Full Definition

Absorbance: (A, D, E) optical density; extinction; decadic absorbance. A measure of the amount of light absorbed by a sample. The absorbance (A) equals minus the base-10 log of the transmittance.

Calorimeter: An insulated vessel for measuring the amount of heat absorbed or released by a chemical or physical change.

Calorimetry: Experimental determination of heat absorbed or released by a chemical or physical change.