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Ch. 3 - Atomic Structure
I. Subatomic Particles
(p.75)
C. Johannesson
Subatomic Particles
ATOM
ATOM
NUCLEUS
NUCLEUS
ELECTRONS
ELECTRONS
PROTONS
PROTONS
NEUTRONS
NEUTRONS
POSITIVE
CHARGE
NEUTRAL
CHARGE
NEGATIVE
CHARGE
NEGATIVE CHARGE
equal in a
Atomic
Most Number
of the atom’s mass.
neutral atom
equals the # of...
C. Johannesson
QUARKS
Subatomic Particles
 Quarks
• component
of protons &
neutrons
• 6 types
• 3 quarks =
1 proton or
1 neutron
He
C. Johannesson
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