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CHEM 120 FINAL EXAM LATEST 2024 WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS/ALREADY GRADED A+ 100%
GUARANTEED TO PASS CONCEPTS
molecular mass (molecular weight) - (answers)the sum of the atomic masses,
in atomic mass units, of all the atoms in the formula of a compound
empirical formula - (answers)a chemical formula showing the ratio of elements
in a compound rather than the total number of atoms
Avogadro's number (Mole) - (answers)6.02 x 10^23
proton - (answers)A subatomic particle that has a positive charge and that is
found in the nucleus of an atom
neutron - (answers)A subatomic particle that has no charge and that is found
in the nucleus of an atom
electron - (answers)A subatomic particle that has a negative charge and orbits
the nucleus
valence electron - (answers)an electron that is found in the outermost shell of
an atom
mole ratio - (answers)a conversion factor that relates the amounts in moles of
any two substances involved in a chemical reaction
ion - (answers)An atom or group of atoms that has a positive or negative
charge.
, 2
anion - (answers)A negatively charged ion
column 7 makes -1 ions
column 6 makes -2 ions
column 5 makes -3 ions
cation - (answers)A positively charged ion
column 1 (except Hydrogen) makes +1 ions
column 2 makes +2 ions
monatomic ion - (answers)an ion formed from a single atom
polyatomic ion - (answers)an ion made of two or more atoms; invisible units
that carry a charge
spectator ion - (answers)an ion that appears on both sides of an equation and
is not directly involved in the reaction
acid - (answers)compound that forms hydrogen ions (H+) in solution
base - (answers)a compound that produces hydroxide (OH-) ions in solution
Lewis structure - (answers)a diagram of a molecule showing how the valence
electrons are arranged among the atoms in the molecule. dashes are used to
represent bonds
1. Draw skeletal structure.
2. Check number of valence electrons needed for each atom.
CHEM 120 FINAL EXAM LATEST 2024 WITH
ACTUAL QUESTIONS AND CORRECT VERIFIED
ANSWERS/ALREADY GRADED A+ 100%
GUARANTEED TO PASS CONCEPTS
molecular mass (molecular weight) - (answers)the sum of the atomic masses,
in atomic mass units, of all the atoms in the formula of a compound
empirical formula - (answers)a chemical formula showing the ratio of elements
in a compound rather than the total number of atoms
Avogadro's number (Mole) - (answers)6.02 x 10^23
proton - (answers)A subatomic particle that has a positive charge and that is
found in the nucleus of an atom
neutron - (answers)A subatomic particle that has no charge and that is found
in the nucleus of an atom
electron - (answers)A subatomic particle that has a negative charge and orbits
the nucleus
valence electron - (answers)an electron that is found in the outermost shell of
an atom
mole ratio - (answers)a conversion factor that relates the amounts in moles of
any two substances involved in a chemical reaction
ion - (answers)An atom or group of atoms that has a positive or negative
charge.
, 2
anion - (answers)A negatively charged ion
column 7 makes -1 ions
column 6 makes -2 ions
column 5 makes -3 ions
cation - (answers)A positively charged ion
column 1 (except Hydrogen) makes +1 ions
column 2 makes +2 ions
monatomic ion - (answers)an ion formed from a single atom
polyatomic ion - (answers)an ion made of two or more atoms; invisible units
that carry a charge
spectator ion - (answers)an ion that appears on both sides of an equation and
is not directly involved in the reaction
acid - (answers)compound that forms hydrogen ions (H+) in solution
base - (answers)a compound that produces hydroxide (OH-) ions in solution
Lewis structure - (answers)a diagram of a molecule showing how the valence
electrons are arranged among the atoms in the molecule. dashes are used to
represent bonds
1. Draw skeletal structure.
2. Check number of valence electrons needed for each atom.
