Isotopes, Protons, Nuetrons, Electrons

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19 Terms

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Isotope

Atoms with the same number of protons, but different numbers of neutrons.

<p>Atoms with the same number of protons, but different numbers of neutrons.</p>
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Mass number

<p>Mass number</p>
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3

atomic number

<p>atomic number</p>
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protons plus neutrons

mass number of an isotope

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charge = protons - electrons

how to find atom charge

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mass number - protons

number of neutrons in an isotopes

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atomic number of element

protons in an isotope

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neutrons

no charge, found in nucleus

<p>no charge, found in nucleus</p>
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protons

positive charge, found in nucleus

<p>positive charge, found in nucleus</p>
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electrons

Negative charge outside the nucleus that can move

<p>Negative charge outside the nucleus that can move</p>
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Atom

the smallest particle of an element that retains its identity in a chemical reaction

<p>the smallest particle of an element that retains its identity in a chemical reaction</p>
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nucleus

the center of an atom, which contains the protons and neutrons; in cells, structure that contains the cell's genetic material in the form of DNA

<p>the center of an atom, which contains the protons and neutrons; in cells, structure that contains the cell's genetic material in the form of DNA</p>
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quark

particle of matter that makes up protons and neutrons

<p>particle of matter that makes up protons and neutrons</p>
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electron cloud

area around the nucleus of an atom where the atom's electrons are most likely to be found

<p>area around the nucleus of an atom where the atom's electrons are most likely to be found</p>
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mass number

the total number of protons and neutrons in the nucleus of an atom

<p>the total number of protons and neutrons in the nucleus of an atom</p>
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periodic table

A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together.

<p>A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together.</p>
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period

A horizontal row of elements in the periodic table

<p>A horizontal row of elements in the periodic table</p>
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Group

a vertical column of elements in the periodic table

<p>a vertical column of elements in the periodic table</p>
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electron dot diagram

a model that represents valence electrons in an atom as dots around the element's chemical symbol

<p>a model that represents valence electrons in an atom as dots around the element's chemical symbol</p>