the law that states that opposite electrical charges attract each other, while like charges repel each other
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subatomic particles
particles that are smaller than atoms
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law of electrostatic charges
the law that states that opposite electrical charges attract each other, while like charges repel each other
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plum pudding model
the atomic model suggested negatively charged material with embedded electrons
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alpha particle
a helium nucleus that is emitted from a nucleus when a radioactive isotope experiences alpha decay
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nuclear model
the atomic developed by Ernest Rutherford in which an atom is made up of a tiny, dense, positively charged central nucleus surrounded by negatively charged electrons
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quantum mechanics
the branch of physics that explores the behavior of matter and energy at the atomic and subatomic level
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bohr model
the atomic model developed by Niels Bohr in which electrons travel in distinct spherical regions called energy levels at fixed distances from the nucleus
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energy level
in the Bohr model of the atom; the regions located at fixed distances from the nucleus of an atom in which electrons are found
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quantum -mechanic model
the currently accepted atomic model in which electrons are found in orbitals that are positioned around a nucleus that contains protons and (usually) neutrons
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electrons
the smallest of the main subatomic particles
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proton
a subatomic particles located in the atoms nucleus
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neutron
carries no electrical charge
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atomic number
the unique number of protons in the atoms of each element
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neutral atom
an atom with balanced electric charges
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Relative mass
1u
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Actual mass
1.6749 x 10^-27 kg
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Symbol
n
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Charge
0
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Relative mass
1u
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Actual mass
1.6726 x 10^-27 kg
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Symbol
p+
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Charge
+1e
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Relative mass
1/1836u
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Actual mass
9.1094 x 10^-31
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Symbol
e-
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Charge
-1e
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isotopes
atoms of the same element with differing numbers of neutrons
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mass number
the total number of particles found in the nucleus of a particular isotope of an element
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isotope notation
a symbol that distinguishes between different isotopes
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ion
a charged atom or group of atoms that has gained or lost electrons, producing an unequal number of protons and electrons
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anion
a negatively charged ion
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cation
a positively charged ion
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atomic mass
the weighted average of the masses of all naturally occurring isotopes of that element
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plum pudding model
the atomic model suggested negatively charged material with embedded electrons
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alpha particle
a helium nucleus that is emitted from a nucleus when a radioactive isotope experiences alpha decay
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nuclear model
the atomic developed by Ernest Rutherford in which an atom is made up of a tiny, dense, positively charged central nucleus surrounded by negatively charged electrons
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39
quantum mechanics
the branch of physics that explores the behavior of matter and energy at the atomic and subatomic level
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bohr model
the atomic model developed by Niels Bohr in which electrons travel in distinct spherical regions called energy levels at fixed distances from the nucleus
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energy level
in the Bohr model of the atom; the regions located at fixed distances from the nucleus of an atom in which electrons are found
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quantum -mechanic model
the currently accepted atomic model in which electrons are found in orbitals that are positioned around a nucleus that contains protons and (usually) neutrons
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electrons
the smallest of the main subatomic particles
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proton
a subatomic particles located in the atom’s nucleus
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neutron
carries no electrical charge
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atomic number
the unique number of protons in the atoms of each element
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neutral atom
an atom with balanced electric charges
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isotopes
atoms of the same element with differing numbers of neutrons
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mass number
the total number of particles found in the nucleus of a particular isotope of an element
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isotope notation
a symbol that distinguishes between different isotopes
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ion
a charged atom or group of atoms that has gained or lost electrons, producing an unequal number of protons and electrons
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anion
a negatively charged ion
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cation
a positively charged ion
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atomic mass
the weighted average of the masses of all naturally occurring isotopes of that element
Studied by 1 person
