Atoms, Isotopes, Ions and the Periodic Table

Atoms, Isotopes, Ions and the Periodic Table

1. Atoms

   • nucleus
     • Protons
       • + charge
     • Neutrons
       • No charge
   • Electrons
     • - charge
   • Neutral atoms
     • #electrons = #protons

2. Periodic table

   • Elements
     • Name
     • Symbol
     • Atomic number
       • #of protons
     • Atomic mass

3. Ions

   • Atoms with a positive or negative charge
   • Different number of protons and electrons
   • Cation= +
   • Anion= -
   • Charge goes in top right of the smbol
   • Mass number and atomic number goes in top left corner of symbol

4. Isotopes

   • Atoms of the same element with different number of neutrons
   • Mass#
     • # of protons + neutrons
   • Symbol-mass#-atomic#

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