G

galvanic cell galvanization
gamma ray gas
gas constant Geiger counter
genetic code geometrical isomer
glass Graham's law
gram grating
group  




galvanic cell

An electrochemical cell in which a spontaneous reaction occurs. Such a cell can be used to generate electricity. Also called voltaic cell.


galvanization

A process in which iron is electrolytically coated with zinc to slow down corrosion.


gamma ray

High energy radiation emitted during radioactive decay.


gas

A state of matter in which the distance between particles changes as necessary so that the matter uniformly occupies its container.


gas constant

A proportionality constant between the product of the pressure and volume of a gas and the product of the number of moles and temperature of the gas.


Geiger counter

A device used to measure the amount of radioactivity present.


genetic code

The collection of sequences of bases in DNA that code for the sequence of amino acids used to form proteins.


geometrical isomer

One of two or more compounds that have the same chemical composition but differ in the spatial arrangements of the atoms.


glass

A material that is solid in physical form, but has the disorder more typical of a liquid.


Graham's law

The statement that the rate of effusion of a gas is inversely proportional to the square root of the molar mass of the gas.


gram

One thousandth of a kilogram.


grating

A grating is a component of the spectrophotometer which disperses white light inot a continuos spectrum of colors. The angle of the grating with respect to the incident light determines the wavelength of light which will ultimately pass through the sample solution.


group

Those elements that comprise a single column of the periodic table.



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