Chem 100, Summer 2003
Study Guide for Exam #3
Topic areas from which questions may be drawn are
listed here. There is no implication about number of questions that
might be asked on any given topic based on its listing here. Some
topics may not appear on the hour exam and others may have more than
one question.
Chapter 8: Chemical
Nomenclature
- Distinguishing between ionic and molecular
compounds
- Definitions of fixed charge and variable
charge compounds/elements
- Naming binary ionic compounds
- Naming ionic compounds that include polyatomic
ions
- Naming molecular compounds
- Common names for a few substances (Table
8.6)
- Naming acids (identifying a substance is an
acid from its chemical formula)
Chapter 9: Chemical Calculations and the
Mole
- Law of definite proportions and proving that
samples demonstrate it
- Definition of formula mass
- Calculation of formula mass
- Concept of percent composition
- Calculation of percent composition from
chemical formula
- Definition of a mole
- Use of Avogadro's number as a conversion
factor
- Definition of molar mass
- Calculation of molar mass
- given measurments of grams and
moles
- given the chemical formula
- Calculations using molar mass as a conversion
factor
- Multiple step problems using molar mass and
Avogadro's number
Chapter 10: Chemical Calculations and
Chemical Equations
- Basic definitions for chemical equations
(reactants, products, etc.)
- Definition of the Law of Conservation of
Mass
- Writing balanced chemical
equations
- Knowing special symbols for chemical equations
(states of matter, etc.)
- Identifying classes of chemical
reactions
- know definitions
- be able to identify a reaction given its
chemical equation
- Reading chemical equations (molecules vs.
moles)
- Mole to mole stoichiometry
problems
- Mass to mass stoichiometry
problems
- Concept of limiting reactant
- Calculation of limiting reactant (and
stoichiometry problem using it)
- Concept of theoretical yield and percentage
yield
- Calculation of percentage yield