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17 Cards in this Set
- Front
- Back
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atom
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smallest part of an element; building block for matter
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atomic number
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the number of protons in the nucleus
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Bohr diagram
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diagram that shows the number of protons and neutrons in a nucleus that are orbited by energy levels and electrons
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chemical symbol
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one or two letter initial that represents the name of an element
Ca=Calcium |
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electron
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a negatively charged particle that moves in an orbit shell outside an atom`s nucleus
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energy level
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electrons are found in paths around an atoms nucleus, energy level.
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family
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a vertical column in the periodic table that contains similar element 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 metal 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
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period
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a horizontal column in the Periodic Table that represents the energy level of an element
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Periodic Table
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a table of all the elements arranged by number and grouped according to similar properties
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proton
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a positively charged particle in an atom`s nucleus
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