University Taster

Chemistry – University Taster

  1. 1. Prerequisites
  2. 2. Physical Chemistry
  3. 3. Organic Chemistry
  4. 4. Inorganic Chemistry
  5. 5. Analytical Chemistry
  6. 6. Practical Laboratory Skills
  7. 7. Next Steps
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The absorbance and emission of electromagnetic waves is the basis for a whole range of spectroscopic techniques. In this lesson we will introduce a couple of these techniques to you which you will likely encounter during your degree.

Spectroscopy and the Electromagnetic Spectrum

The range of different spectroscopic techniques chemists use are divided by the region of the electromagnetic spectrum they irradiate the sample with. This is because different regions of the electromagnetic spectrum excite different features in atoms and molecules. Remember the lower the wavelength the more energy the wave has. That is why X-rays and gamma rays are dangerous to humans while we are exposed to radio waves all day long.

Figure 1. Region in the electromagnetic spectrum.

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