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Atomic Theory, Atomic Structure, Bohr Diagrams, & Periodic Trends Test Review Flashcards | StudBud
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Atomic Theory, Atomic Structure, Bohr Diagrams, & Periodic Trends Test Review
Atomic Theory, Atomic Structure, Bohr Diagrams, & Periodic Trends Test Review
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This review was designed to review key concepts discussed in Unit I - Atomic Structure and Patterns
Flashcards
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Questions
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Answers
1
Look at the image to the right. What is the name of region where electrons exist?
electron cloud
electron fog
electron core
electron world
2
What element is atomic number 42?
Oxygen
Molybdenum
Gold
Strontium
3
How did J. J. Thompson contribute to our understanding of the atomic theory?
Predicted that there must be a positive particle
Discovered the neutron
Electrons are scattered in empty space around the nucleus
Discovered the negative electron
4
If you drew Fluorine's Bohr Diagram, how many electrons would be drawn on energy levels?
2-7
2-8-8-1
7-2
1-8-8-2
5
How did Ernest Rutherford contribute to our understanding of the atomic theory?
Electrons orbit in an electron cloud around the nucleus
Discovered that neutrons were also located in the nucleus
Named the positive particles in the nucleus “protons”
Concluded that electrons are located in planet-like orbits
6
If you drew the Bohr Diagram of the element Fluorine, how many energy levels would you draw?
4
2
3
1
7
How do you calculate the number of neutrons in an atom?
# neutrons equals atomic mass - atomic number
# neutrons always = # protons
# neutrons equals atomic mass + atomic number
# neutrons equals atomic mass ÷ atomic number
8
What is an atom?
Atoms are the basic unit of photons.
Atoms are the basic building blocks of matter.
Atoms are the basic unit of energy.
Atoms are the basic building blocks of life.
9
Rank the elements by increasing radius: Antimony, Nitrogen, Bismuth, Arsenic
Antimony, Nitrogen, Bismuth, Arsenic
Bismuth, Antimony, Arsenic, Nitrogen
Nitrogen, Arsenic, Antimony, Bismuth
Arsenic, Bismuth, Nitrogen, Antimony
10
Which element contains 20 electrons?
Fluorine
Calcium
Potassium
Neon
11
Which element has an atomic mass of 190 amu?
Tantalum
Rhenium
Osmium
Iridium
12
Rank the following elements by increasing electronegativity values: Sb, N, Bi, As.
Nitrogen, Arsenic, Antimony, Bismuth
Bismuth, Antimony, Arsenic, Nitrogen
Arsenic, Nitrogen, Bismuth, Antimony
Antimony, Bismuth, Nitrogen, Arsenic
13
How did John Dalton contribute to our understanding of atomic theory?
All atoms of a given element are identical.
All matter is made of atoms.
Atoms are too small to see, indivisible and indestructible.
Discovered the negative electron
14
What does the modern atomic theory tell us about atomic structure?
Atoms are particles where the eletcrons orbit the nucleus
Atoms are rigid little spheres
Atoms are particles where electrons exist in clouds
Atoms contain neutrons and protons in the core
15
How many neutrons does the element carbon contain?
18
72
2
6
16
Which element contains 16 protons?
Sodium
Sulfur
Oxygen
Beryllium
17
What is the symbol for Rubidium?
Rh
Rb
Ra
Rn
18
How did James Chadwick contribute to the understanding of the atomic theory?
All atoms of a given element are identical.
Discovered that neutrons were also located in the nucleus
Discovered that neutrons contain no charge.
Atoms are too small to see, indivisible and indestructible.
19
How did Niels Bohr contribute to the understanding of the atomic theory?
Electrons move at high speeds in an electron cloud
Electrons are located on orbits called energy levels
Named the positive charged particles protons
Described atomic structure with the "Plum Pudding" model
20
What element has the symbol Na?
Silver
Nitrogen
Sodium
Niobium
