Chemistry Term 1 Review Worksheet With Answers Page 4

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Chem term # 1 review sheet
30. Copper has two naturally occurring isotopes. Information about
35. The volume of an acid required to neutralize exactly
the two isotopes is shown in the table below.
15.00 milliliters (mL) of a base could be measured most
precisely if it were added to the base solution from a
Naturally Occurring Isotopes of Copper
Isotope
Atomic Mass
Percent Natural
A. 100 mL graduate
B.
125 mL Erlenmeyer ask
(atomic mass units, u)
Abundance (%)
C.
50 mL buret
D. 50 mL beaker
Cu-63
62.93
69.17
Cu-65
64.93
30.83
Show a numerical setup for calculating the atomic mass of
copper.
36. Which of the following atoms has the smallest covalent atomic
radius?
A. Li
B.
Be
C.
C
D. F
31.
In the modern Periodic Table, the elements are arranged in order
of increasing
A. atomic number
B.
mass number
C.
oxidation number
D. valence number
37.
Compared to the covalent atomic radius of a sodium atom, the
covalent atomic radius of a magnesium atom is smaller. The
smaller radius is primarily a result of the magnesium atom
having
A. a larger nuclear charge
32. Which symbol represents an alkaline earth element?
B.
a smaller nuclear charge
A. Na
B.
Mg
C.
Ne
D. Ag
C.
more principal energy levels
D. fewer principal levels
2+
2+
2+
33. In the reaction Zn + Cu
! Zn
+ Cu, the Cu
ions
38. Which element in Period 2 has the greatest tendency to form a
A. gain electrons
B.
lose electrons
negative ion?
C.
gain protons
D. lose protons
A. lithium
B.
carbon
C.
neon
D.
uorine
34. Which is the most active nonmetal in the Periodic Table of the
Elements?
39. The most active metal in Group 2 (IIA) is
A. Na
B.
F
C.
I
D. Cl
A. Mg
B.
Sr
C.
Ba
D. Ca
page 4

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