Multiple-Choice Items:
1. Which statement best describes the difference between Mendeleev’s original periodic table and a modern version?
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A
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Mendeleev’s periodic table was based on an ascending order of the atomic number from left to right with horizontal groups based on similar properties.
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B
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Mendeleev’s periodic table was based on an ascending order of the atomic mass from left to right with vertical groups based on similar properties.
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C
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Mendeleev’s periodic table was based on a descending order of the atomic mass from left to right with vertical groups based on similar properties.
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D
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Mendeleev’s periodic table was based on a descending order of the atomic mass from left to right with vertical groups based on similar properties.
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2. Which description of tellurium is responsible for its larger atomic mass and lower atomic number than iodine on the periodic table?
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A
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Tellurium has lighter protons, decreasing its atomic mass.
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B
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Tellurium has lighter isotopes, decreasing its atomic mass.
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C
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Tellurium has heavier protons, increasing its atomic mass.
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D
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Tellurium has heavier isotopes, increasing its atomic mass.
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3. Which of the following correctly compares the relationship between atoms, elements, and matter?
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A
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Matter is a collection of atoms; atoms are made up of unique elements.
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B
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Atoms are a collection of matter; matter is made up of unique elements.
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C
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Elements are a collection of matter; matter is made up of unique atoms.
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D
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Matter is a collection of elements; elements are made up of unique atoms.
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4. Which element does not belong in Period 3 in the periodic table?
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A
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Aluminum
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B
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Silicon
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C
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Tin
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D
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Sodium
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5. Which element borders the separation between metals and non-metals, but is not considered a metalloid?
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A
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Aluminum
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B
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Germanium
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C
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Silicon
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D
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Arsenic
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6. Which element has the electron configuration shown below?
1s22s2p4
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A
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Boron (B)
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B
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Carbon (C)
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C
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Oxygen (O)
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D
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Nitrogen (N)
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Use the diagram below to answer questions 7–9.
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X
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A
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B
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M
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N
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O
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P
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Q
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X
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A
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B
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M
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N
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O
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P
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Q
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X
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A
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B
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C
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D
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E
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F
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G
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H
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I
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J
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K
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L
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M
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N
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O
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P
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Q
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X
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A
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B
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C
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D
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E
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F
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G
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H
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I
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J
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K
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L
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M
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N
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O
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P
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Q
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X
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A
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B
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C
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D
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E
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F
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G
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H
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I
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J
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K
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L
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M
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N
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O
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P
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Q
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X
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A
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B
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C
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D
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E
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F
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G
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H
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I
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J
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K
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L
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M
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N
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O
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P
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Q
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X
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R
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R
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R
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R
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R
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R
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R
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R
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R
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R
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R
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R
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R
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R
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S
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S
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S
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S
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S
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S
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S
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S
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S
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S
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S
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S
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S
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S
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7. Which letter(s) best represents the alkaline earth metals?
8. Which letter(s) best represents the halogens?
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A
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P
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B
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Q
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C
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P and Q
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D
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Q and X
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9. What letter(s) best represents the actinide series?
Multiple-Choice Answer Key:
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1. B
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2. D
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3. D
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4. C
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5. A
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6. C
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7. B
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8. B
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9. D
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Short-Answer Items:
10. What are the electron configurations for the following elements?
Lithium (Li)
Magnesium (Mg)
Chlorine (Cl)
Neon (Ne)
11. In your own words, describe the periodic trends of the following elemental properties, moving from top to bottom down a group, and from left to right across a period:
Short-Answer Keys:
10. What are the electron configurations for the following elements?
Lithium (Li) 1s22s1
Magnesium (Mg) 1s22s2p63s2
Chlorine (Cl) 1s22s2p63s2p5
Neon (Ne) 1s22s2p6
11. In your own words, describe the periodic trends of the following elemental properties, moving from top to bottom down a group and from left to right across a period:
Atomic radius increases as you move down the periodic table groups and from right to left across the periods.
Ionization energies increase as you move up the groups and from left to right across the periods.
Performance Assessment:
The performance assessment involves students organizing elements from an alien world where all matter is made from 22 different elements (S-C-5_Performance Assessment-Alien Periodic Table and KEY.doc). Students fill it in based on the clues that they are given in the worksheet. The same trends they learned throughout the unit apply to this alien table. There is only one correct answer for each box, and all boxes should be filled in. For students who might need an opportunity for additional learning, it may be helpful to number the columns (groups) on the alien periodic table.
Performance Assessment Answer Key:
The Answer KEY for this performance assessment is provided in the handout (S-C-5_Performance Assessment-Alien Periodic Table and KEY.doc).
