CHEM 101 Ivy Tech Final Questions and
Answers (2026) | Study Guide Pack |
Accurate Solutions | A+
• How do you convert between the number of moles of a compound and the
number of atoms? -✓✓Convert moles to molecules using Avogadro's
number, then multiply by the number of atoms in each molecule.
• What are common types of evidence that a chemical reaction has
happened? -✓✓Color change, temperature change, gas production,
formation of a precipitate, light produced, odor change.
• What is the Law of Conservation of Mass? -✓✓Mass cannot be created
or destroyed; total mass of reactants equals total mass of products.
• What is a chemical equation? -✓✓A symbolic representation of a
chemical reaction showing formulas, states of matter, and coefficients.
• How can you identify a balanced chemical equation? -✓✓The number of
atoms of each element on the reactant side equals the number on the
product side.
• How do you balance an unbalanced chemical equation? -✓✓Write
correct formulas, count atoms, add coefficients, and re-check atom counts.
• How do you use solubility rules to identify insoluble compounds? -
✓✓Check the rules for solubility of nitrates, Group 1 salts, chlorides,
sulfates, carbonates, phosphates, and hydroxides.
• What is a precipitation reaction? -✓✓A reaction where two aqueous ionic
solutions form a solid (precipitate).
• How can you identify precipitation reactions? -✓✓When products include
an insoluble compound that forms a solid.
, • What is a redox reaction? -✓✓A reaction in which electrons are
transferred between substances.
• What is a combination reaction? -✓✓Two or more substances combine to
form a single product.
• What is a decomposition reaction? -✓✓One compound breaks down into
simpler substances.
• What is an exchange reaction? -✓✓A reaction where ions or atoms swap
partners.
• What is a single displacement reaction? -✓✓One element replaces
another in a compound.
• What is a double displacement reaction? -✓✓Two ionic compounds
exchange ions.
• What is stoichiometry? -✓✓Stoichiometry is the quantitative study of how
reactants and products relate in a chemical reaction using mole ratios.
• What is the limiting reactant for a chemical reaction? -✓✓The reactant
that runs out first and limits how much product is formed.
• What is the percent yield for a chemical reaction? -✓✓Percent yield =
(actual yield / theoretical yield) × 100%
• What are the properties of gases? -✓✓Gases expand, are compressible,
have low density, and fill their container.
• How do gas particles behave at the molecular level? -✓✓Gas particles
move fast, spread far apart, and have minimal interactions.
• What is the kinetic molecular theory of gases? -✓✓A theory stating that
gas particles move randomly, collisions are elastic, and temperature is
related to kinetic energy.
Answers (2026) | Study Guide Pack |
Accurate Solutions | A+
• How do you convert between the number of moles of a compound and the
number of atoms? -✓✓Convert moles to molecules using Avogadro's
number, then multiply by the number of atoms in each molecule.
• What are common types of evidence that a chemical reaction has
happened? -✓✓Color change, temperature change, gas production,
formation of a precipitate, light produced, odor change.
• What is the Law of Conservation of Mass? -✓✓Mass cannot be created
or destroyed; total mass of reactants equals total mass of products.
• What is a chemical equation? -✓✓A symbolic representation of a
chemical reaction showing formulas, states of matter, and coefficients.
• How can you identify a balanced chemical equation? -✓✓The number of
atoms of each element on the reactant side equals the number on the
product side.
• How do you balance an unbalanced chemical equation? -✓✓Write
correct formulas, count atoms, add coefficients, and re-check atom counts.
• How do you use solubility rules to identify insoluble compounds? -
✓✓Check the rules for solubility of nitrates, Group 1 salts, chlorides,
sulfates, carbonates, phosphates, and hydroxides.
• What is a precipitation reaction? -✓✓A reaction where two aqueous ionic
solutions form a solid (precipitate).
• How can you identify precipitation reactions? -✓✓When products include
an insoluble compound that forms a solid.
, • What is a redox reaction? -✓✓A reaction in which electrons are
transferred between substances.
• What is a combination reaction? -✓✓Two or more substances combine to
form a single product.
• What is a decomposition reaction? -✓✓One compound breaks down into
simpler substances.
• What is an exchange reaction? -✓✓A reaction where ions or atoms swap
partners.
• What is a single displacement reaction? -✓✓One element replaces
another in a compound.
• What is a double displacement reaction? -✓✓Two ionic compounds
exchange ions.
• What is stoichiometry? -✓✓Stoichiometry is the quantitative study of how
reactants and products relate in a chemical reaction using mole ratios.
• What is the limiting reactant for a chemical reaction? -✓✓The reactant
that runs out first and limits how much product is formed.
• What is the percent yield for a chemical reaction? -✓✓Percent yield =
(actual yield / theoretical yield) × 100%
• What are the properties of gases? -✓✓Gases expand, are compressible,
have low density, and fill their container.
• How do gas particles behave at the molecular level? -✓✓Gas particles
move fast, spread far apart, and have minimal interactions.
• What is the kinetic molecular theory of gases? -✓✓A theory stating that
gas particles move randomly, collisions are elastic, and temperature is
related to kinetic energy.
