EOC Physical Science Sample Items Goal 5
Do Not Reproduce–NCDPI
1.
2.
The atoms in a compound have what
characteristic?
A
They can be seen individually.
B
They merge their nuclei.
C
They join in a definite proportion.
D
They have the same charge.
What do all atoms of the same element
have in common?
A
number of neutrons
B
mass number
C
atomic mass
D
atomic number
4.
Which drawing best represents an
atom of lithium?
A
3P
3N
B
3P
4N
C
3.
What causes an object to have a
positive charge?
A
Protons are removed.
B
Protons are added.
C
Electrons are removed.
D
Electrons are added.
4P
3N
D
3P
4N
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Published October 2004. May reproduce for instructional and
educational purposes only; not for personal or financial gain.
EOC Physical Science Sample Items Goal 5
Do Not Reproduce–NCDPI
5.
Laughing gas is a compound
containing a ratio of two atoms
of nitrogen to one atom of oxygen.
What is the formula?
7.
Why are the noble gases so
unreactive?
A
Their outer shell has 1 electron.
A
NO2
B
Their outer shell has 2 electrons.
B
N 2O
C
Their outer shell is filled.
C
N 2O2
D
Their outer shell needs one
electron to be full.
D
NO
End of Goal 5 Sample Items
6.
Which of the following elements is
chemically most similar to cesium?
A
rubidium
B
xenon
C
helium
D
barium
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Answers to EOC Physical Science Sample Items
Goal 5
1.
Objective 5.01
Analyze development of current atomic theory: Dalton, J.J. Thompson, Rutherford,
Bohr.
Thinking Skill: Knowledge
Correct Answer:
C
2.
Objective 5.02
Examine the nature of atomic structure: protons, neutrons, electrons, atomic mass,
atomic number, isotopes.
Thinking Skill: Knowledge
Correct Answer:
D
3.
Objective 5.02
Examine the nature of atomic structure: protons, neutrons, electrons, atomic mass,
atomic number, isotopes.
Thinking Skill: Applying
Correct Answer:
C
4.
Objective 5.02
Examine the nature of atomic structure: protons, neutrons, electrons, atomic mass,
atomic number, isotopes.
Thinking Skill: Applying
Correct Answer:
B
5.
Objective 5.05
Analyze the formation of simple inorganic compounds from elements.
Thinking Skill: Applying
Correct Answer:
B
6.
Objective 5.06
Analyze the periodic trends in the physical and chemical properties of elements, symbols,
groups (families), period.
Thinking Skill: Organizing
Correct Answer:
A
7.
Objective 5.06
Analyze the periodic trends in the physical and chemical properties of elements, symbols,
groups (families), period.
Thinking Skill: Knowledge
Correct Answer:
C
North Carolina Testing Program
Published October 2004. May reproduce for instructional and educational
purposes only; not for personal or financial gain.