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17 Cards in this Set
- Front
- Back
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atom
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smallest particle of an element
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atomic number
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the umber of protrons in an atoms nucleus
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bohr diagram
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Diagram shows the number of protrons and neutrons in a nucleus that orbit levels and contain electrons.
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chemical symbol
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one or more letter intail that reprsents the name of an element
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electron
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a negativley charged particle that moves in an orbits shell outside an atoms nucleus
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energy level
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a fixed amount of energy.electrons that are found around an atoms nucleus,energy level
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family
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group a vertical colum in the perodic table that contains similar element qualities.
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isotope
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atoms of the same elements that have different numbers of neutrons in their nuclei.
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mass number
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the total number of protons and newtons a nucleus
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metalloid-
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an element with properties of both metals and nonmetals.
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metal
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any element on the left side of the periodic table except hydrogen;good conductors of electricity
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neutron
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a submatic particle of about the mass proton.
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non-metal
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an element that lacks the characteristics of a metal;elements on the right side of the periodic table.
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nucleus
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the control center of a cell
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period
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horizontal colum in the periodic table table that repesents the energy level of an element
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periodic table
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a table of all of the elements arranged y the number and grouped according to similar properties
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proton
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a positively charged particle in an atoms nucleus.
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