Chem 134 Final Exam Questions &
Answers
extensive property vs intensive property -
correct answer ✅* Extensive: Examples include mass, volume, and
length.
* Intensive: Examples include density, temperature, and hardness.
Rules for determining sig figs -
Density = ? -
correct answer ✅mass / volume
Conservation of Mass and Energy -
correct answer ✅A physical law stating that the total amount of
mass and energy remains constant before/after/during a reaction
Law of Multiple Proportions -
correct answer ✅if two or more different compounds are
composed of the same two elements, then the ratio of the masses
of the second element combined with a certain mass of the first
element is always a ratio of small whole numbers
What evidence about atomic structure was revealed by the
experiments of Thomson -
,Chem 134 Final Exam Questions &
Answers
correct answer ✅using cathode tubes to determine the existence
of electrons
What evidence about atomic structure was revealed by the
experiments of Millikan -
correct answer ✅oil drop experiments accurately measure the
value of this elementary charge, approximately 1.602×10-191.602e-
19
What evidence about atomic structure was revealed by the
experiments of Rutherford -
correct answer ✅evidence that the atom consists mostly of space
with a tiny, dense, positively charged nucleus at its center
How to determine the number of protons, neutrons, and electrons
from the symbol on the periodic table -
correct answer ✅
,Chem 134 Final Exam Questions &
Answers
How to find the average atomic mass -
correct answer ✅To calculate the average atomic mass of an
element:
* Multiply the mass of each isotope by its natural abundance
(expressed as a decimal).
* Sum the results from all isotopes.
What is the value of Avagadro's Number and what does it do? -
correct answer ✅6.022e23
used to convert from mass to moles
Differentiate between ionic and molecular compounds. -
correct answer ✅* Ionic compounds are formed by the transfer of
, Chem 134 Final Exam Questions &
Answers
electrons between a metal and a nonmetal, creating a lattice of
charged ions
* molecular compounds are formed by the sharing of electrons
between nonmetals, resulting in discrete, neutral molecules
What are the four types of chemical formulas? -
correct answer ✅empirical, molecular, structural, and condensed
structural
Ionic vs Molecular Compounds -
correct answer ✅Ionic compouds = metal + nonmetal (trans e-)
Molecular compounds = nonmental + nonmetal (share e-)
Nitrate -
correct answer ✅N03-
Nitrite -
correct answer ✅N02-
Carbonate -
correct answer ✅C0^2-_3
Answers
extensive property vs intensive property -
correct answer ✅* Extensive: Examples include mass, volume, and
length.
* Intensive: Examples include density, temperature, and hardness.
Rules for determining sig figs -
Density = ? -
correct answer ✅mass / volume
Conservation of Mass and Energy -
correct answer ✅A physical law stating that the total amount of
mass and energy remains constant before/after/during a reaction
Law of Multiple Proportions -
correct answer ✅if two or more different compounds are
composed of the same two elements, then the ratio of the masses
of the second element combined with a certain mass of the first
element is always a ratio of small whole numbers
What evidence about atomic structure was revealed by the
experiments of Thomson -
,Chem 134 Final Exam Questions &
Answers
correct answer ✅using cathode tubes to determine the existence
of electrons
What evidence about atomic structure was revealed by the
experiments of Millikan -
correct answer ✅oil drop experiments accurately measure the
value of this elementary charge, approximately 1.602×10-191.602e-
19
What evidence about atomic structure was revealed by the
experiments of Rutherford -
correct answer ✅evidence that the atom consists mostly of space
with a tiny, dense, positively charged nucleus at its center
How to determine the number of protons, neutrons, and electrons
from the symbol on the periodic table -
correct answer ✅
,Chem 134 Final Exam Questions &
Answers
How to find the average atomic mass -
correct answer ✅To calculate the average atomic mass of an
element:
* Multiply the mass of each isotope by its natural abundance
(expressed as a decimal).
* Sum the results from all isotopes.
What is the value of Avagadro's Number and what does it do? -
correct answer ✅6.022e23
used to convert from mass to moles
Differentiate between ionic and molecular compounds. -
correct answer ✅* Ionic compounds are formed by the transfer of
, Chem 134 Final Exam Questions &
Answers
electrons between a metal and a nonmetal, creating a lattice of
charged ions
* molecular compounds are formed by the sharing of electrons
between nonmetals, resulting in discrete, neutral molecules
What are the four types of chemical formulas? -
correct answer ✅empirical, molecular, structural, and condensed
structural
Ionic vs Molecular Compounds -
correct answer ✅Ionic compouds = metal + nonmetal (trans e-)
Molecular compounds = nonmental + nonmetal (share e-)
Nitrate -
correct answer ✅N03-
Nitrite -
correct answer ✅N02-
Carbonate -
correct answer ✅C0^2-_3
