Express Lab � Observing the Spectra of Elements2011

Express Lab � Observing the Spectra of Elements2011...

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Express Lab – Observing the Spectra of Elements -Analysis- 1. Hydrogen’s spectra consist of visible lines which are separate colours of light. The strongest band lies at the red end of the spectrum, while the others are in the blue and violet area. The distance between various lines changes. The lines on the violet side become closer and closer together. On the red end there is only one band visible and therefore no pattern is possible. The spectra’s of other elements compare to that of Hydrogen and of the light bulb in a couple of ways. Firstly, all the elements have several bright bands in their spectrum. Secondly, there are patterns throughout their unique spectrums some of which are only repeated a few times and are replaced by other patterns. Some elements do not contain patterns in their spectrums. Lastly, all the elements have one colour that is stronger than the others. This can be seen when the band of light is wider than the others as well as the
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Unformatted text preview: intensity of the light. 2. The reason for hydrogen having four colours on the spectrum is because when the electron in the hydrogen atom moves away and towards the nucleus it produces a new colour represented on the spectrum. 3. The light emitted by Hydrogen is different from the light emitted by other elements because of number of electrons in each element. The more electrons an element there is more movement of electrons when it is excited. Therefore since there is more movement of electrons we know that when electrons move from their orbitals it gives off a certain colour. 4. Gas discharge tubes and street lights are similar because they both contain a certain gas inside an enclosed tube. They also share another similarity which is they both excite electrons in order to kick start the production of light. Some of the gasses used in street lights are sodium which is heated up until is becomes a gas, mercury, carbon,...
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This note was uploaded on 01/10/2011 for the course EE 1244 taught by Professor Drera during the Fall '10 term at Conestoga.

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