Chemistry > Atomic Theory and Measurement
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Atomic Theory and Measurement

  • Dalton’s Atomic Theory: statements which shaped atomic theory for years; atoms cannot be cut, atoms of one element are identical, compounds are made from small numbers of atoms

  • Law of Multiple Proportions: definition

  • Current Atomic Theory: atoms have components (protons, electrons, neutrons); atoms of same element may have different masses (isotopes)

  • Nuclear charge Z is an integer and identifies an element

  • Atomic Masses are in amu, isotopes have different number of neutrons

  • Learn the basic SI units and multipliers