NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
ATOMIC STRUCTURE AND INTRO TO THE
MOLE
NOTES PACKET
Democritus
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Law of Conservation of Mass –
Ex:
Law of Definite Proportions –
Ex:
Law of Multiple Proportions –
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
John Dalton
Nationality: _______________________________________________
Time Period: ______________________________________________
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Dalton’s Atomic Theory
1.
2.
3.
4.
5.
Modern Atomic Theory
1.
2.
3.
4.
5.
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
What is the Structure of an atom?
Atom-
Nucleus –
Proton Neutron –
Electron –
Subatomic Particles –
DRAW A MODEL OF THE CARBON ATOM. LABEL ALL PARTS.
J.J. Thompson
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
Robert Millikan
Nationality: _______________________________________________
Time Period: ______________________________________________
Occupation: _______________________________________________
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Ernest Rutherford
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NIELS BOHR
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
LOUIS DEBROGLIE
Nationality: _______________________________________________
Time Period: ______________________________________________
Occupation: _______________________________________________
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SCHRODINGER
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
CHADWICK
Nationality: _______________________________________________
Time Period: ______________________________________________
Occupation: _______________________________________________
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Nuclear forces –
Can you count atoms…if so HOW?
Atomic Number –
Ex:
Isotopes –
Ex:
Mass Number –
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
Ex:
Nuclide –
Ex:
Sample Problems:
1. How many protons, electrons, and neutrons are there in an atom of
chlorine-37?
*Remember:
atomic number = number of protons = number electrons
mass number = number of neutrons + number protons
2. How many protons, electrons and neutrons are in an atom of bromine-80?
35 protons, 35 electrons, 45 neutrons
3. Write the nuclear symbol for carbon-13.
4. Write the hyphen notation for the element that contains 15 electrons
and 15 neutrons.
Atomic Mass Unit –
Average Atomic Mass –
Ex: You have a box containing two sizes of marbles. If 25% of the marbles
have masses of 2.00g each and 75% have masses of 3.00g each, how is the
weighted average calculated?
*See table 3-4. Page 80 of text.
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
Element
Symbol
Atomic
Number
Average
Atomic
Mass
Atomic
Mass*
Protons* Neutrons* Electrons*
Plutonium
Hydrogen
Lithium
Tungsten
Silver
Avogadro
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Mole –
Avogadro’s Number –
“If every person living on Earth (5 billion people) worked to count the number of atoms in
one mole of an element, and each person counted at a rate of one atom per second, it would
take about 4 million years for all the atoms to be counted.”
Molar Mass –
Ex:
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
Gram/Mole Conversions
MolesGrams
1. What is the mass in grams of 3.50 mol of an element copper, Cu?
2. What is the mass in grams of 2.25 mol of the element iron, Fe?
3. What is the mass in grams of 0.375 mol of the element potassium, K?
4. What is the mass in grams of 0.0135 mol of the element sodium, Na?
5. What is the mass in grams of 16.3 mol of the element nickel, Ni?
Grams  Moles
1. A chemist produced 11.9 g of aluminum, Al. How many moles of aluminum were produced?
2. How many moles of calcium, Ca, are in 5.00 g of calcium?
3. How many moles of gold, Au, are in 3.60 * 10 -10 g of gold?
Conversions with Avogadro’s Number
1. How many moles of silver, Ag, are in 3.01 * 1023 atoms of silver?
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NAME______________________________________ASSIGNMENT #________
GPS: SC2, SC3, SCSh 1,6,7,8,9
2. How many moles of lead, Pb, are in 1.50 * 10 12 atoms of lead?
3. How many moles of tin, Sn, are in 2500 atoms of tin?
4. How many atoms of aluminum, Al, are in 2.75 mol of aluminum?
Grams Atoms
1. What is the mass in grams of 1.20 *108 atoms of copper, Cu?
2. What is the mass in grams of 7.5*1015 atoms of nickel, Ni?
3. How many atoms of sulfur, S, are in 4.00 g of sulfur?
4. What mass of gold, Au, contains the same number of atoms as 9.0 g of aluminum, Al?
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