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Atomic Structure and TheoryScientists Experiments
D E
t
Experiments
Thought of the atom as “plum-pudding”
I-100
Answer.
I-200
Thought of the atom as a “planetary” model
Answer.
I-300
This scientist first discovered the nucleus.
Answer.
I-400
Thought of the “billiard ball” model for the atom
Answer.
I-500
Provided a mathematical relationship describing the 3D space that an electron can occupy
Answer.
II-100
First modern scientist that said that matter is composed of indestructible and indivisible atoms
Answer.
II-200
isotopes are atoms of one kind of element that contain different numbers this subatomic particle
Answer.
II-300
When you have the same element, it is guaranteed that you have the same of this (these) subatomic particles.
Answer.
II-400
This law states that the total mass of a chemical reaction must remain the same.
Answer.
II-500• Which of these parts of Dalton's Atomic theory were proven
incorrect? • a.) Atoms of different elements differ in their physical and
chemical properties• b.) Atoms of different elements combine in simple whole-
number ratios to form compounds• c.) All matter is made of indivisible and indestructible atoms.• d.) Chemical reactions consist of the combination,
separation, or rearrangement of atoms• e.) All atoms of a given element are identical in their
chemical and physical properties.
Answer.
III-100
what the Au foil experiment showed about the volume of an atom
Answer.
III-200
the charge carried by alpha particles and the charge carried by the nucleus
Answer.
III-300
particles that make up most of the mass of the atom and where they are found
Answer.
III-400
a subatomic particle that was discovered by J.J. Thompson in the late 1800's
Answer.
III-500
Describe why the spectral glasses gave out different colored lines
Answer.
IV-100
the element with 32 electrons and 73 neutrons
Answer.
IV-200
the mass number of the most likely most abundant isotope of chlorine, Cl
Answer.
IV-300
the number of electrons in a copper atom with a postive two charge
Answer.
IV-400
all atoms of the same element have the same…; give name and particle name
Answer.
IV-500
the isotope by which all other isotopes’ masses are measure; the standard mass
Answer.
V-100
the two characteristics of isotopes of one kind of element that are needed to determine the average atomic mass of the element
Answer.
V-200
the number on the periodic table that represents the AAM
Answer.
V-300
Based on the following symbol, how many protons, neutrons and electrons does it have
Answer.
235 270Q
235 270Q
V-400
How many protons, neutrons and electrons is in a N-15 isotope with a negative 3 charge
Answer.
V-500
Why are the AAM’s not whole numbers?
Answer.
I-100 A
• JJThomson
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I-200 A
• Bohr
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I-300 A
• Rutherford
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I-400 A
• Dalton
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I-500 A
• Schrodinger
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II-100 A
• Dalton’s Atomic Theory
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II-200 A
• Neutron
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II-300 A
• Protons
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II-400 A
• Law of Conservation of Mass
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II-500 A
• The third and 5th one
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III-100 A
• it is mostly empty space
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III-200 A
• positive
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III-300 A
• neutrons and protons; the nucleus
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III-400 A
• electron
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III-500 A
• The electricity gives the gas energy and promotes the electron to a higher energy level. When it goes back to a lower energy level it gives off the energy as the form of light which we see as different wavelengths/colors.
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IV-100 A
• germanium
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IV-200 A
• 35
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IV-300 A
• 27
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IV-400 A
• atomic number; protons
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IV-500 A
• carbon-12
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V-100 A
• mass of each isotope and the relative percent abundance of each isotope
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V-200 A
• the one with the decimal!
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V-300 A
• 70 Protons, 165 Neutrons, 68 electrons
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V-400 A
• 7 protons, 8 neutrons, 10 electrons
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V-500 A
• the AAM is based on the weighted average of all isotopes of the element
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