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chemistry vocab1

chapter 5 vocab

what is an atom? the smallest particle of an element that can exist either alone or in combination
what is an isotope? : any of two or more species of atoms of a chemical element with the same atomic number and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties
what is radioactivity? the property possessed by some elements or isotopes of spontaneously emitting energetic particles by the disintegration of their atomic nuclei;the rays emitted
what is a neutron? an uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus
what is a wavelength? the distance in the line of advance of a wave from any one point to the next point of corresponding phase
what is frequency? the number of times that a periodic function repeats the same sequence of values during a unit variation of the independent variable
what is amplitude? the maximum departure of the value of an alternating current or wave from the average value
what is quantum? any of the very small increments or parcels into which many forms of energy are subdivided
what is photon? a unit of intensity of light at the retina equal to the illumination received per square millimeter of a pupillary area from a surface having a brightness of one candle per square meter
Created by: jaie simone