Studied by 1 personTags & Description
subatomic particles
particles that are smaller than atoms
law of electrostatic charges
the law that states that opposite electrical charges attract each other, while like charges repel each other
subatomic particles
particles that are smaller than atoms
law of electrostatic charges
the law that states that opposite electrical charges attract each other, while like charges repel each other
plum pudding model
the atomic model suggested negatively charged material with embedded electrons
alpha particle
a helium nucleus that is emitted from a nucleus when a radioactive isotope experiences alpha decay
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
quantum mechanics
the branch of physics that explores the behavior of matter and energy at the atomic and subatomic level
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
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
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
electrons
the smallest of the main subatomic particles
proton
a subatomic particles located in the atoms nucleus
neutron
carries no electrical charge
atomic number
the unique number of protons in the atoms of each element
neutral atom
an atom with balanced electric charges
Relative mass
1u
Actual mass
1.6749 x 10^-27 kg
Symbol
n
Charge
0
Relative mass
1u
Actual mass
1.6726 x 10^-27 kg
Symbol
p+
Charge
+1e
Relative mass
1/1836u
Actual mass
9.1094 x 10^-31
Symbol
e-
Charge
-1e
isotopes
atoms of the same element with differing numbers of neutrons
mass number
the total number of particles found in the nucleus of a particular isotope of an element
isotope notation
a symbol that distinguishes between different isotopes
ion
a charged atom or group of atoms that has gained or lost electrons, producing an unequal number of protons and electrons
anion
a negatively charged ion
cation
a positively charged ion
atomic mass
the weighted average of the masses of all naturally occurring isotopes of that element
plum pudding model
the atomic model suggested negatively charged material with embedded electrons
alpha particle
a helium nucleus that is emitted from a nucleus when a radioactive isotope experiences alpha decay
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
quantum mechanics
the branch of physics that explores the behavior of matter and energy at the atomic and subatomic level
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
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
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
electrons
the smallest of the main subatomic particles
proton
a subatomic particles located in the atom’s nucleus
neutron
carries no electrical charge
atomic number
the unique number of protons in the atoms of each element
neutral atom
an atom with balanced electric charges
isotopes
atoms of the same element with differing numbers of neutrons
mass number
the total number of particles found in the nucleus of a particular isotope of an element
isotope notation
a symbol that distinguishes between different isotopes
ion
a charged atom or group of atoms that has gained or lost electrons, producing an unequal number of protons and electrons
anion
a negatively charged ion
cation
a positively charged ion
atomic mass
the weighted average of the masses of all naturally occurring isotopes of that element
Note
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