CHM135H1 Lecture Notes - Lecture 1: Microwave Oven, Work Function, Significant Figures
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CHM135H1 Full Course Notes
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Electronic structure can be studied by looking at electromagnetic radiation. Significant figures don"t matter, in tests it has to be in the ball park. Any form of energy traveling as waves through space. Wavelength - distance between 2 peaks or troughs. Frequency - number of waves per second that pass through a given point (cycles/s, s-1, hz) The higher the number of waves, the higher the frequency. The higher the wave the higher the amplitude. Microwave oven excites the water molecules in food, creating kinetic energy which heats up the food. If a light shines on a metal, only some electrons come off. Current flows as soon as light of minimum frequency hits the metal. As the frequency of light hitting the metal increases, the higher the kinetic energy of the elec coming off (it increases linearly) Number of electrons increase with intensity of light, but not kinetic energy z) electrons.