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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. |