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17 Cards in this Set
- Front
- Back
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atom
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is the smallest piece of an element
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atomic number
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# of protons an atom has it it's nucleus
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Bohr diagram
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diagram shows the number of protons and neutrons in a nucleus orbit energy levels and contain electrons
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chemical symbol
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one or two letter initial that represents the name of an element ..EX: C=Calcium
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Electron
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-a negatively charged ,orbit shell outside an atom nucleus
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energy level
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electrons are found in paths around and atoms nucleus ,energy level.
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family/group
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a vertical column in the periodic table that contains similar elements qualities
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isotope
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atoms of the same element that have different numbers of neutrons in their nuclei
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mass number
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total number of protons and neutrons in 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 particle within an atom’s nucleus that has no electrical charge .
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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 column in the periodic table that represent the energy level of an element
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Periodic Table
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a table of all of the elements arranged by number and grouped according to similar properties
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proton
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a positively charged particles in an atom’s nucleus
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