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15 Cards in this Set

  • Front
  • Back
Protons
particle has a postive charge
electrons
a high energy particle that moves outside the nucleus of the atom - carry negative charge
neutrons
particle has nu charge
period
horizontal row of elements
periodic table
the arranggement of the elements in order of atomic number - similar elements are group in clolums
group
groups in the same verticle column - also called family
atomic number
the number of protrons in a nucleus
atomic mass unit (amu)
messurment of particles in an atom
Valence Electrons
electrons fatherst away from the nucleus
Electron Dot Diagram
representation of the number of Valence Electrons in an atom using dots around the symbol
Atomic Mass
the avaerage mass of one atom of the element
ductile
material that can be pulled out into a long wire
malleable
material that can be rolled or punded into another shape
Symbol
one or two letter idedefy most elements
periodic
a regular, repeated pattern