Physical Science/Chemistry Practice (periodic Trends, Bonding) Question Preview (ID: 35319)
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A negatively-charged ion always has more
a) protons than neutrons
b) neutrons than protons
c) protons than electrons
d) electrons than protons
The valence shell of a neutral atom loses two electrons. Which of the following ions might result?
a) O2-
b) K+
c) N2-
d) Mg2+
Which of the following elements is a nonmetal?
a) Li
b) Ba
c) Mn
d) Se
Which best explains why water dissolves most salts?
a) Water is polar and salts form ions in solution
b) Water is nonpolar and salts form ions in solution
c) Water is the same density as salts
d) Water has a different density than most salts
Which element is an alkaline earth metal?
a) Li
b) O
c) Ne
d) Ca
Which type of bond is responsible for atoms of pure gold to be bonded togther?
a) metallic
b) covalent
c) ionic
d) polar
Carbon atoms can link themselves together into long chains and rings to form a vast number of highly complicated molecules. Which of the following statements BEST explains why carbon atoms behave this way?
a) They easily form ionic bonds with each other.
b) They easily form covalent bonds with each other.
c) They easily combine with atoms of oxygen.
d) They easily become highly charged ions.
Aluminum oxide, Al2O3, is produced by combining Al3+ and O2- particles. What type of compound has been formed?
a) covalent
b) ionic
c) metallic
d) polar
In the periodic table, the rows are called
a) periods
b) groups
c) classes
d) families
Which group in the periodic table forms ions that have a valence of 1+?
a) 1
b) 2
c) 16
d) 8
Which of the following elements is classified as a metal?
a) bromine
b) helium
c) sulfur
d) lithium
Which of the following atoms has the largest atomic radius?
a) barium (Ba)
b) chlorine (Cl)
c) iodine (I)
d) magnesium (Mg)
Which of the following atoms has six valence electrons?
a) magnesium (Mg)
b) silicon (Si)
c) sulfur (S)
d) sodium (Na)
Which of the following elements has the same Lewis dot structure as silicon?
a) germanium (Ge)
b) aluminum (Al)
c) arsenic (As)
d) gallium (Ga)
Which one of the following atoms has the largest radius?
a) O
b) F
c) S
d) Cl
Which one of the following has the smallest radius?
a) Na
b) Cl
c) P
d) Br
The ability of an atom in a molecule to attract electrons is best quantified by the
a) paramagnetism
b) diamagnetism
c) ionization energy
d) electronegativity
Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
a) increases, decreases
b) decreases, increases
c) increases, increases
d) stays the same, increases
Of the atoms below, __________ is the most electronegative.
a) Br
b) F
c) Cl
d) N
Of the elements below, __________ is the most metallic.
a) Na
b) Mg
c) Al
d) K
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