Silberberg. Chemistry, The Molecular
Nature of Matter and Change Ch. 3 with
correct answers 100% 2025 update
stoichiometry - Correct AnswerThe study of the mass-mole-number relationships of
chemical formulas and reactions
mole - Correct AnswerThe SI base unit for amount of substance. The amount that
contains a number of objects equal to the number of atoms in exactly 12 g of carbon-12
Avogadro's number - Correct AnswerA number (6.022 * 10^23 to four sig figs) equal to
the number of atoms in exactly 12 g of carbon-12; the number of atoms, molecules, or
formula units in one mole of an element or compound.
molar mass - Correct AnswerThe mass of 1 mol of entities (atoms, molecules, or
formula units) of a substance, in units of g/mol.
empirical formula - Correct AnswerA chemical formula that shows the lowest relative
number of atoms of each element in a compound.
molecular formula - Correct AnswerA formula that shows the actual number of atoms of
each element in a molecule of a compound.
structural formula - Correct AnswerA formula that shows the actual number of atoms,
their relative placement, and the bonds between them.
combustion analysis - Correct AnswerA method of determining the formula of a
compound from the amounts of its combustion products; used commonly for organic
compounds.
isomer - Correct AnswerOne of two or more compounds with the same molecular
formula, but different properties, often as a result of different arrangements of atoms.
chemical equation - Correct AnswerA statement that uses chemical formulas to express
the identities and quantities of the substances involved in a chemical or physical
change.
reactant - Correct AnswerA starting substance in a chemical reaction
product - Correct AnswerA substance formed in a chemical reaction.
balancing coefficent - Correct AnswerA numerical multiplier of all the atoms in the
formula immediately following it in a balanced chemical equation.
Nature of Matter and Change Ch. 3 with
correct answers 100% 2025 update
stoichiometry - Correct AnswerThe study of the mass-mole-number relationships of
chemical formulas and reactions
mole - Correct AnswerThe SI base unit for amount of substance. The amount that
contains a number of objects equal to the number of atoms in exactly 12 g of carbon-12
Avogadro's number - Correct AnswerA number (6.022 * 10^23 to four sig figs) equal to
the number of atoms in exactly 12 g of carbon-12; the number of atoms, molecules, or
formula units in one mole of an element or compound.
molar mass - Correct AnswerThe mass of 1 mol of entities (atoms, molecules, or
formula units) of a substance, in units of g/mol.
empirical formula - Correct AnswerA chemical formula that shows the lowest relative
number of atoms of each element in a compound.
molecular formula - Correct AnswerA formula that shows the actual number of atoms of
each element in a molecule of a compound.
structural formula - Correct AnswerA formula that shows the actual number of atoms,
their relative placement, and the bonds between them.
combustion analysis - Correct AnswerA method of determining the formula of a
compound from the amounts of its combustion products; used commonly for organic
compounds.
isomer - Correct AnswerOne of two or more compounds with the same molecular
formula, but different properties, often as a result of different arrangements of atoms.
chemical equation - Correct AnswerA statement that uses chemical formulas to express
the identities and quantities of the substances involved in a chemical or physical
change.
reactant - Correct AnswerA starting substance in a chemical reaction
product - Correct AnswerA substance formed in a chemical reaction.
balancing coefficent - Correct AnswerA numerical multiplier of all the atoms in the
formula immediately following it in a balanced chemical equation.
