Download Name Strand II: Chemical Structures and Properties Multiple Choice

Name _______________________
Strand II: Chemical Structures and Properties
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
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1. The Atomic number of iron is 26, and the atomic mass is 55.847. What do these numbers mean in regard to
protons, electrons and neutrons.
a. There are 26 each of neutrons and the rest of the mass is the result of electrons.
b. There are 26 protons and 26 electrons. Some atoms of iron have 29 neutrons; the .847
shows that there is more than one isotope of iron.
c. There are 26 protons and 29 neutrons. Each particle has an atomic mass of 1.
d. There are 26 protons and 26 neutrons. Since teh neutrons have slightly more mass than
protons, the mass is greater than 52.
Study the table below.
Atom
W
X
Y
Z
____
____
____
Number of protons Number of neutrons Number of electrons
2
4
3
53
57
53
55
60
54
1
0
1
2. Which stoms has a net positive charge?
a. Atom W
c. Atom Y
b. Atom X
d. Atom Z
3. Which of the following is the most important factor in determining an element’s place in the periodic table?
a. number of protons
c. atomic charge
b. number of neutrons
d. atomic density
4. The chemical properties of an element are determind by its
a. atomic mass
c. electron arrangement
b. proton number
d. atomic size
The Periodic Table of Elements classifies all of the known elements into categories based on their physical
and chemical properties. Repeating patterns within the table are useful in predicting how elements combine
to form every kind of matter.
____
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5. In order to be identifed as the element carbon ( C) an atom must have _____.
a. 6 protons
c. 12 electrons
b. 6 neutrons
d. 12 neutrons
6. Oxygen has an atomic number of 8. Which of the following elements would you expect to be most similar in
terms of its chemical properties?
a. Nitrogen (N)
c. Sulfur (S)
b. Fluorine (F)
d. Chlorine (Cl)
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7.
____
A glass of cola was spilled on the carpet. Most colas are acidic with a pH usually between 2 and 4. Based on
the pH shown above, which of the following substances could best be used to neutralize the spilled cola?
a. Lemon juice
c. Milk
b. Black Coffee
d. Baking soda
8. Which of the following statements helps explain why there are millions of carbon compounds?
a. Carbon has four valence electrons.
b. Carbon atoms form bonds with other carbon atoms.
c. Carbon atoms can form single, double, and triple bonds.
d. all of the above
Figure 5-1
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9. Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B.
a. A and B are both periods.
c. A and B are both groups.
b. A is a period and B is a group.
d. A is a group and B is a period.
____ 10. One of the gases released after gasoline burns in a car’s engine is carbon monoxide. Which of the following
statements explains why there is carbon monoxide in this mixture of gases?
a. Not enough oxygen is present when gasoline is burned in the engine.
b. Gasoline contains carbon monoxide.
c. The combustion of gasoline in the engine is complete.
d. Carbon monoxide is produced during the complete combustion of a fossil fuel.
____ 11. Which of the following factors does NOT explain why carbon can form so many compounds?
a. Carbon can bond in chains and rings.
b. The same atoms can be grouped in different ways, forming isomers.
c. Carbon can form four single bonds.
d. Carbon has six protons in its nucleus.
Short Answer
12.
Use the partial periodic table above to compare the atomic structure of carbon (C) to that of sodium
(Na). Describe how they are alike and how they are different.
Strand II: Chemical Structures and Properties
Answer Section
MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
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ANS:
ANS:
ANS:
B
C
A
C
A
C
D
D
B
A
D
PTS:
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PTS:
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PTS:
PTS:
PTS:
PTS:
1
1
1
1
1
1
1
1
1
1
1
DIF:
DIF:
DIF:
DIF:
L1
L1
L2
B
OBJ:
OBJ:
OBJ:
OBJ:
9.1.2
5.2.1
9.1.7
1
SHORT ANSWER
12. ANS:
Score 3
The response describes the atomic structure of both carbon and sodium, including how they are alike
and different. It includes a description of the atomic mass/protons and electron
configuration (number of valence electrons) of both elements. It is correct and well elaborated (this
may include other information, such as reactivity, metal vs. nonmetal, etc.).
Score 2
The response describes the atomic structure of both carbon and sodium, including how they are alike
and different. It includes a description of the atomic mass/protons and/or electron
configuration (or number of valence electrons) of both elements. It is less elaborated than the Score
Point 3 responses and/or contains an inaccuracy.
-orThe response describes the atomic structure, including a description of the atomic mass/protons and
electron configuration (or number of valence electrons) of one of the two elements. It is correct and
well elaborated.
Score 1
The response describes some information related to the atomic structure and/or properties of one or
both of the elements. It contains limited elaboration. It may contain misconceptions.
Score 0
The response describes little or no accurate or relevant information related to the atomic
structure and/or properties of either element. It may contain misconceptions.
PTS: 1