CHEM 101 Chapter Notes - Chapter 1.9, 1.10, 2.2: Diffraction, Mobile Phone, Stationary Point
10 Oct 2017
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Atomic mass: average mass for each element: weight according to the natural abundance of each isotope. Mole (mol): the amount of material containing 6. 02214 * (cid:883)(cid:882)(cid:2870)(cid:2871) particles. Avogadro"s number: the amount of particles in one mole. The definition of the mole shows a relationship between mass and number of atoms. Molar mass: the mass of 1 mol of atoms of an element. An element"s molar mass is grams per mole is numerically equal to the element"s atomic mass in atomic mass units. Mass of element --> ( molar mass) --> moles of element --> (avogadro"s number) --> number of atoms. Electromagnetic radiation: a type of energy embodied in oscillating electric and magnetic fields: a wave composed of oscillating, mutually perpendicular electric and magnetic fields propagating through space. Magnetic field: a region of space where a magnetic particle experiences a force. Electric field: a region of space where an electrically charged particle experiences a force.
