Download Ch. 6 Vocabulary

Ch. 6 Vocabulary
Atom
• the smallest
unit of an
element that
still has
properties of
the element
Proton
• a subatomic
particle with a
positive charge
that is found in
the nucleus of
an atom
Neutron
• a subatomic
particle that
has no charge
and is found in
the nucleus of
an atom
Electron
• a subatomic
particle that
has a
negative
charge
Nucleus
• the dense
positively
charged center
of the atom
where protons
and neutrons
are located
Electron Cloud
• a region around
the nucleus of
an atom where
electrons are
likely to be
found
Atomic Number
• The number
of protons in
the nucleus
of an atom
Atomic Mass
• the weighted
average of all
of the naturally
occurring
isotopes of the
element
Mass Number
• the sum of the
number of
protons and
neutrons in the
nucleus of an
atom
Isotopes
• atoms of the
same element
that have the
same number of
protons but a
different number
of neutrons