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Chem Chap3

definitions

TermDefinition
Continuous Spectrum When a white light is passed through a prism it is broken up into an array of colours.
Emission Line Spectrum When light from a gas discharge tube is passed through a prism it is broken up into lines of colour. It is coloured lines against a black backgroud, shows elements present.
Energy Level A fixed energy value that an electron in an atom may have.
Quantised Fixed value
Ground State When an electron is in its original orbit.
Excited State When an atom absorbs energy it causes the electron to move into a higher energy level.
Absorption Spectrum Black lines against a coloured background, shows missing wavelengths
Orbital An area in space where there is a high probability of finding and electron.
Created by: lisa.smyth97