Chem 103 Final ACTUAL UPDATED Exam
Questions and CORRECT Answers
The correct name for CuSO4 is - CORRECT ANSWER -
The shape of the polyatomic ammonium ion, NH4+ is _____. - CORRECT ANSWER -
tetrahedral
What is the formula of a compound that contains Na+ and PO43- ions? - CORRECT
ANSWER -Na3PO4
The correct formula for chromium(III) sulfate is _____. - CORRECT ANSWER -
Cr2(SO4)3
Double and triple bonds form because... - CORRECT ANSWER -single covalent bonds do
not give all of the atoms in the molecule eight valence electrons
A sodium ion is an example of a(n)... - CORRECT ANSWER -cation
The ability of an atom to attract the shared electrons in a covalent bond is its - CORRECT
ANSWER -electronegativity
In a molecule with covalent bonding - CORRECT ANSWER -atoms are held together by
sharing electrons
The octet rule indicates that... - CORRECT ANSWER -atoms lose, gain, or share valence
electrons to have 8 valence electrons
Which of the following compounds contains an ionic bond? - CORRECT ANSWER -CaO
, A molecule contains a central atom with three identical bonds to other atoms and one lone pair.
The shape of this molecule is... - CORRECT ANSWER -trigonal pyramidal
The correct name for SnCl2 is - CORRECT ANSWER -tin(II) chloride
When two or more equivalent dot structures can be written for a given molecule it is said to have
____ structures. - CORRECT ANSWER -resonance
Which one of the following compounds contains an ion with a 3+ charge? - CORRECT
ANSWER -FeCl3
When a solid is converted directly to a gas, the change of state is called - CORRECT
ANSWER -sublimation
1.00 mol of neon has a mass of - CORRECT ANSWER -20.2 g
How many carbon atoms are there in 1.00 mol of C2H6? - CORRECT ANSWER -
1.20x10^24
In ionic compounds, _____ lose their valence electrons to form positively charged - CORRECT
ANSWER -metals, cations
Which of the following substances contains a nonpolar bond? - CORRECT ANSWER -N2
The molar mass of calcium hydroxide, Ca(OH)2 to 3 sig figs is - CORRECT ANSWER -
74.1 g
What is the mass percent of carbon in methane, CH4? - CORRECT ANSWER -74.9%
Questions and CORRECT Answers
The correct name for CuSO4 is - CORRECT ANSWER -
The shape of the polyatomic ammonium ion, NH4+ is _____. - CORRECT ANSWER -
tetrahedral
What is the formula of a compound that contains Na+ and PO43- ions? - CORRECT
ANSWER -Na3PO4
The correct formula for chromium(III) sulfate is _____. - CORRECT ANSWER -
Cr2(SO4)3
Double and triple bonds form because... - CORRECT ANSWER -single covalent bonds do
not give all of the atoms in the molecule eight valence electrons
A sodium ion is an example of a(n)... - CORRECT ANSWER -cation
The ability of an atom to attract the shared electrons in a covalent bond is its - CORRECT
ANSWER -electronegativity
In a molecule with covalent bonding - CORRECT ANSWER -atoms are held together by
sharing electrons
The octet rule indicates that... - CORRECT ANSWER -atoms lose, gain, or share valence
electrons to have 8 valence electrons
Which of the following compounds contains an ionic bond? - CORRECT ANSWER -CaO
, A molecule contains a central atom with three identical bonds to other atoms and one lone pair.
The shape of this molecule is... - CORRECT ANSWER -trigonal pyramidal
The correct name for SnCl2 is - CORRECT ANSWER -tin(II) chloride
When two or more equivalent dot structures can be written for a given molecule it is said to have
____ structures. - CORRECT ANSWER -resonance
Which one of the following compounds contains an ion with a 3+ charge? - CORRECT
ANSWER -FeCl3
When a solid is converted directly to a gas, the change of state is called - CORRECT
ANSWER -sublimation
1.00 mol of neon has a mass of - CORRECT ANSWER -20.2 g
How many carbon atoms are there in 1.00 mol of C2H6? - CORRECT ANSWER -
1.20x10^24
In ionic compounds, _____ lose their valence electrons to form positively charged - CORRECT
ANSWER -metals, cations
Which of the following substances contains a nonpolar bond? - CORRECT ANSWER -N2
The molar mass of calcium hydroxide, Ca(OH)2 to 3 sig figs is - CORRECT ANSWER -
74.1 g
What is the mass percent of carbon in methane, CH4? - CORRECT ANSWER -74.9%
