CHEM 1A Lecture Notes - Lecture 3: Gamma Ray, Electromagnetic Spectrum, Stationary Point

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CHEM 1A Full Course Notes
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Electrons determine the size and physical/chemical properties of atoms! A model that explains the strange behavior of electrons. Contains oscillating electric and magnetic fields (perpendicular) The number of cycles that pass a stationary point in a given time. Colors we see are reflected, while the other colors are absorbed. Electromagnetic spectrum (low energy/long waves high energy/short waves) Light source releases light waves which move past two slits. Proved that particles have a wave nature; electromagnetic waves have particle nature (wave-particle duality) Electron diffraction observed even when the electron flux was low; electrons encounter slits one at a time. Revealed that light has a particle nature. Metals partially filled with electrons were excited to the vacuum state in order to find the work function (ionization energy of the metal) Elements such as gold do not rust due to their high work function (about 5 ev)

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