Download Catalyst (4 min) - Schurz High School

Catalyst (4 min)
What is the name of the isotope below?
 Why is this atom neutral?
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What is the name of the isotope below?
– Mass#
 4 protons  Beryllium
 Mass# = 4p + 5n = 9
 Isotope Name: Beryllium-9
 Element
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Why is this atom neutral?
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 same
# protons and electrons
 Opposite charges (+/-)
 The charges cancel out!
NOTE: QUIZ TOMORROW!
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Announcements:
Quiz TOMORROW!
 Homework due Monday (11/1/10)
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What’s on the quiz:
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Know the names, charges, masses and
locations in the atom of the three subatomic
particles
Draw atoms – correct number of protons,
neutrons and electrons in the correct places
Be able to determine the number of protons,
neutrons and electrons in the atom
Be able to name isotopes
Atomic Structure and
Isotopes Review
10-28-10
How the Game Works…
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Question on the screen
Work with your groups
To get the point
 Board
in the air on time
 Correct answer
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Team with the most points WINS (HW Pass)
Points off:
 Cheating
 Lack
of participation
 Whining/ Arguing
 Disrespectful language/behavior
Question #1
What is the smallest unit of an element that
retains the identity of the element?
The ATOM!
Question #2
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What subatomic particle has no charge
and where is it located?
Neutron
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In the nucleus
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Question #3
An element has 9 protons, 10 neutrons and
9 electrons. What element is the atom?
9 protons
FLUORINE!
Question #4
If an atom has 11 protons, how many
electrons does it have?
11
# protons = # electrons
Question #5
Why do atoms have a neutral charge overall
even though they are made of charged
particles?
#protons = # electrons
Protons (+) and electrons (-) have
opposite charges
The charges cancel out!
Question #6
If an atom has 5 protons, 5 electrons and 7
neutrons, what is the atomic mass of the
atom?
Mass = #p + #n
Mass = 5 + 7
Mass = 12
Question #7
What is the name of the isotope with 6
protons, 7 neutrons, and 6 electrons?
Element name?
Carbon
Mass number?
6 + 7 = 13
Carbon-13
Question #8
What are two reasons why scientists use
symbols to represent the different
elements?
Easier to write
All scientists use the same
symbols
Question #9
How many charged particles are in one
sodium (Na) atom? (Hint: which particles
are charged?)
Protons and electrons have charges
11 protons + 11 electrons
22 charged particles!
Question #10
What is the element symbol of an atom with
19 protons and 17 neutrons?
Atomic # = 19
Potassium
K
Question #11
What is the name of an isotope with 19
protons and 17 neutrons?
Element?
Potassium
Mass Number?
19 + 17 = 36
Potassium-36
Question #12
An atom has a mass number of 15 and 9
protons. How many neutrons does the
atom have?
Mass number = #p + # n
15 = 9 + # n
6=#n
Question #13
The atomic number of an atom is 8 and the
atomic mass is 14. How many protons,
electrons and neutrons are in the atom?
Atomic # = # protons
8 protons!
# protons = # electrons
8 electrons!
Mass number = #p + #n
14 = 8 + #n
6 neutrons!
Question #14
What is the element symbol of an atom with
a mass number of 27 and 11 neutrons?
Mass number = #p + #n
27 = #p + 11
#p = 27 -11
#p = atomic # = 116
Sulfur
S
Question #15
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What is the name of the isotope below?
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10 protons
5 neutrons
Neon-15
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Question #16
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What is the atomic number of the atom
below?
Atomic # = 10
What is the mass number of the atom below?
mass number = 15
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