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Atoms

Published on Nov 18, 2015

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PRESENTATION OUTLINE

1.

ATOMS

PROTONS, NEUTRONS, AND ELECTRONS
2.

BASIC INFO

  • Every proton has an electron partner
  • Neutral charged atoms
  • Atomic number = protons
  • Mass number = protons & neutrons combined
3.

PROTONS

  • Positive charge
  • Found in the nucleus
  • Adds mass to the atom
  • Same as atomic number
4.

NEUTRONS

  • Neutral or no charge
  • Found in the nucleus
  • Adds mass to the atom
  • mass# - atomic# = neutron total
5.

ELECTRONS

  • Negative charge
  • Found outside the nucleus
  • Does not add mass to the atom
  • Equal to the # of protons
6.

BOHR MODEL

  • Group # = valance electrons
  • Period # = electron circles
  • Valance electrons = last circle
  • Valance determines reactivity
7.

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James Rowland