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17 Cards in this Set
- Front
- Back
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atom
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the smallest part of an element
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atomic number
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the number of protons in the nucleus of an atom
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bohr diagram
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a diagram that describes the atom as a small positively charged nucleus surrounded by electrons that orbit in a circular motion
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chemical symbol
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a one or two letter. initialy agreed code for an element
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electron
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a negatively charged part of an atom that moves in an orbit orbit shall an atoms nucleus
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energy level
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electrons are found in paths around an atoms nucleus
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family
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is a group that is a verticle column in the periodic table that contains similair element qualities
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isotope
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parts of an atom with the same number of protons but a different number of electrons in their nuclei
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mass number
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the weighted mass of the protons and neutrons in an ellement
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metalloid
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has the same characteristics of both a metal and and a non metal
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metal
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good condutor of heat and electricaty usually sollid
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neutron
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particle in an atom that is neither positive or negative
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non metal
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poor conductor of heat usully gas at room temp
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nucleus
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the innermost part of an atom that contains most of an atoms mass
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period
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horizontol rows in the periodic table,
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periodic table
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a graph consisting of all elements in order to organize them
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proton
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positively charged particle in an atoms nucleus
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