Honors Chemistry: Chemical Reactions
and Gas Laws Exam 2025 Questions and
Answers
Synthesis - ANSWER-A + B -> AB
Decomposition - ANSWER-AB -> A + B
Single replacement - ANSWER-A + BC -> B + AC
Double replacement - ANSWER-AB + CD -> AD + CB
Combustion - ANSWER-AB + CD -> H2O + CO2
Mole - ANSWER-Amount of reactants and amounts of products of chemical
reactions; specific # of particles; amount of pure substance containing the same
number of chemical units, 6.02212076 x 10^23
Molar mass - ANSWER-Add up the atomic mass of all the atoms in the
compound's chemical formula
Empirical formula - ANSWER-The simplest whole # ratio of atoms present in a
compound
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, Molecular formula - ANSWER-The actual amount of atoms in each element of a
molecule
% composition - ANSWER-Divide the mass of the element in the compound by
total mass of the compound and multiply by 100
Stoichiometry - ANSWER-Steps include balancing the chemical equation,
converting units to moles, using mole ratio to calculate moles of desired substance,
and converting moles back to desired units
Theoretical yield - ANSWER-The maximum amount of product possible based on
stoichiometry calculations
Actual yield - ANSWER-Amount of product you measure during experiment/lab
% yield - ANSWER-Percent calculated by dividing actual yield over theoretical
yield x 100
Total pressure with partial pressure - ANSWER-Ptotal = P1 + P2 + P3; Add
partial pressure (pressure of each individual gas) together
Kinetic Molecular Theory - ANSWER-Gases made of particles that are in constant
random motion; the volume of gas particles themselves is negligible compared to
the total volume of the gas; there are no attractive or repulsive forces; collisions
between gas particles are perfectly elastic; the average kinetic energy of gas particles
is directly proportional to the absolute temperature
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
and Gas Laws Exam 2025 Questions and
Answers
Synthesis - ANSWER-A + B -> AB
Decomposition - ANSWER-AB -> A + B
Single replacement - ANSWER-A + BC -> B + AC
Double replacement - ANSWER-AB + CD -> AD + CB
Combustion - ANSWER-AB + CD -> H2O + CO2
Mole - ANSWER-Amount of reactants and amounts of products of chemical
reactions; specific # of particles; amount of pure substance containing the same
number of chemical units, 6.02212076 x 10^23
Molar mass - ANSWER-Add up the atomic mass of all the atoms in the
compound's chemical formula
Empirical formula - ANSWER-The simplest whole # ratio of atoms present in a
compound
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, Molecular formula - ANSWER-The actual amount of atoms in each element of a
molecule
% composition - ANSWER-Divide the mass of the element in the compound by
total mass of the compound and multiply by 100
Stoichiometry - ANSWER-Steps include balancing the chemical equation,
converting units to moles, using mole ratio to calculate moles of desired substance,
and converting moles back to desired units
Theoretical yield - ANSWER-The maximum amount of product possible based on
stoichiometry calculations
Actual yield - ANSWER-Amount of product you measure during experiment/lab
% yield - ANSWER-Percent calculated by dividing actual yield over theoretical
yield x 100
Total pressure with partial pressure - ANSWER-Ptotal = P1 + P2 + P3; Add
partial pressure (pressure of each individual gas) together
Kinetic Molecular Theory - ANSWER-Gases made of particles that are in constant
random motion; the volume of gas particles themselves is negligible compared to
the total volume of the gas; there are no attractive or repulsive forces; collisions
between gas particles are perfectly elastic; the average kinetic energy of gas particles
is directly proportional to the absolute temperature
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
