CHEM 111 FINAL PSU 2026
COMPREHENSIVE STUDY GUIDE
QUESTIONS WITH ANSWERS GRADED A+
⩥ isomers. Answer: Compounds that have the same molecular formula
but different structures.
⩥ stoichiometry. Answer: that portion of chemistry dealing with
numerical relationships in chemical reactions; the calculation of
quantities of substances involved in chemical equations
⩥ chemical equation. Answer: A representation of a chemical reaction
that uses symbols to show the relationship between the reactants and the
products
⩥ reactants. Answer: Element or compound that enters into a chemical
reaction
⩥ products. Answer: The elements or compounds produced by a
chemical reaction
⩥ combination reactions. Answer: A chemical reaction in which two or
more substances combine to form a single product.
, ⩥ decomposition reactions. Answer: A reaction in which a single
compound breaks down to form two or more simpler substances
⩥ combustion reactions. Answer: covers all reactions where oxygen gas
combines with any other compound to produce water and carbon
dioxide. to identify, look for hydrocarbons (any compound with Carbon
and Hydrogen, and sometimes Oxygen)
⩥ formula weight. Answer: Sum of all the masses, in AMU, present in
one molecule of a molecular compound (molecular weight).
⩥ mole. Answer: 6.022x10²³ particles
⩥ molar mass. Answer: The mass in grams of 1 mol of a substance
⩥ limiting reactant. Answer: A reactant that is totally consumed during a
chemical reaction, limits the extent of the reaction, and determines the
amount of product.
⩥ theoretical yeild. Answer: In a chemical reaction, the maximum
amount of product that can be produced from a given amount of
reactant.
COMPREHENSIVE STUDY GUIDE
QUESTIONS WITH ANSWERS GRADED A+
⩥ isomers. Answer: Compounds that have the same molecular formula
but different structures.
⩥ stoichiometry. Answer: that portion of chemistry dealing with
numerical relationships in chemical reactions; the calculation of
quantities of substances involved in chemical equations
⩥ chemical equation. Answer: A representation of a chemical reaction
that uses symbols to show the relationship between the reactants and the
products
⩥ reactants. Answer: Element or compound that enters into a chemical
reaction
⩥ products. Answer: The elements or compounds produced by a
chemical reaction
⩥ combination reactions. Answer: A chemical reaction in which two or
more substances combine to form a single product.
, ⩥ decomposition reactions. Answer: A reaction in which a single
compound breaks down to form two or more simpler substances
⩥ combustion reactions. Answer: covers all reactions where oxygen gas
combines with any other compound to produce water and carbon
dioxide. to identify, look for hydrocarbons (any compound with Carbon
and Hydrogen, and sometimes Oxygen)
⩥ formula weight. Answer: Sum of all the masses, in AMU, present in
one molecule of a molecular compound (molecular weight).
⩥ mole. Answer: 6.022x10²³ particles
⩥ molar mass. Answer: The mass in grams of 1 mol of a substance
⩥ limiting reactant. Answer: A reactant that is totally consumed during a
chemical reaction, limits the extent of the reaction, and determines the
amount of product.
⩥ theoretical yeild. Answer: In a chemical reaction, the maximum
amount of product that can be produced from a given amount of
reactant.
