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Chem Chap3
definitions
Term | Definition |
---|---|
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. |