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2024 Chemistry
Ch 3 Atomic Structure
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Cards (10)
What is an
atom
?
smallest
particle that can still have
chemical
characteristics of an
element
What makes atoms behave so differently?
different
types of atoms contain
different
number of
sub-atomic
particles
What are
protons
?
-Found in the
nucleus
-carry
positive
electrical charge
-relative mass of
1
What are
neutrons
?
-Found in the
nucleus
-neutral
- no
net
electrical charge
-relative mass of
1
What are
electrons
?
-Found in the
electron shell
-carry
negative
electrical charge
-relative mass of
1/1840
(negligible)
Why are atoms
electrically neutral
?
-number of
protons
is
equal
to the number of
electrons
-electrical charge is
balanced
off
What is
proton
number (Z)? (atomic number)
number of
protons
in the
nucleus
What is the
nucleon
number (A)? (
mass
number /
relative atomic mass
number)
total number of
protons
and
neutrons
in the nucleus
How do you find the number of
neutons
?
Nucleon
number -
proton
number
How do you write nuclide notation of carbon?
nucleon
number
above
and
in front
of atomic symbol of element,
proton
number
below
and
in front
of atomic symbol of element
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