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