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Transcript 
Chapter 4.2 Student Notes on
the Structure of Atoms
Chapter 4.2 Section Review
What I already
know about
atoms
What I would
like to learn
Atoms are
building
blocks of
matter
Contain
smaller
Structure
of the atom
What I have
Learned
(1 Thing)
Chapter 4.2
Structure of the Atom
What are the three subatomic
particle?
•Protons
•Electrons
•Neutrons
Chapter 4 Structure of the Atom
What is the positive particle?
•B. Protons
Chapter 4 Structure of the Atom
Why did Chadwick conclude that
the particles were neutral?
•Charged Objects
did not deflect
the particles.
Chapter 4 Structure of the Atom
What properties vary among
subatomic particles?
•Mass
•Charge
•Location
Chapter 4 Structure of the Atom
What properties vary among
subatomic particles?
•B. Mass
•C. Charge
•D. Location
Chapter 4 Structure of the Atom
What is the ratio of mass
between neutrons and protons?
• A. mass of 1
Proton = mass of
1 Neutron
Chapter 4 Structure of the Atom
Two atoms of the same element
have different numbers of
protons? True or False
•False
Chapter 4 Structure of the Atom
What is an atomic number?
•The number of
protons in an
element
Chapter 4 Structure of the Atom
Qualities equal to an atomic
number?
•B. # of Protons
•D # of Electrons
Chapter 4 Structure of the Atom
Two different elements can have
the same atomic number? T/F
•False
Chapter 4 Structure of the Atom
What is the mass number of an
atom?
•Sum of Protons
•+ Neutrons
Chapter 4 Structure of the Atom
Complete the equation?
•# of Neutrons =
•Mass Number –
Atomic Number
Chapter 4 Structure of the Atom
Every atom has the same # of ?
•Protons
•Electrons
Chapter 4 Structure of the Atom
Every atom of a given element
does not have the same # of?
•Neutrons
Chapter 4 Structure of the Atom
What are isotopes?
•Atoms of the
same element
with different #
of neutrons.
Chapter 4 Structure of the Atom
All oxygen atoms have 8
protons, what is the number of
neutrons in Oxygen 18
•C. 10 Neutrons
Chapter 4 Structure of the Atom
Isotopes of oxygen have
different chemical properties.
•False
Chapter 4 Structure of the Atom
Water that contains hydrogen-2
atoms instead of hydrogen 1 is
called?
•Heavy Water
Chapter 4
The building blocks of protons
and neutrons are known as
•Quarks
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