AP CHEMISTRY CHAPTER 2: ATOMS, IONS, AND COMPOUNDS
Cue Column
Note Taking Column
2.1: THE ATOMIC THEORY –
FROM EARLY IDEAS TO JOHN
DALTON
What are the four major postulates of
Dalton’s Atomic Theory?
What are the three Combination
Laws: Conservation of Mass, Definite
Proportions, and Multiple
Proportions? Explain these laws using
Dalton’s Atomic Theory. Give
examples.
2.2: THE STRUCTURE OF THE
ATOM
Describe the experiments that lead to
the modern description of the atom:
Becquerel, Curie, Thomson, Millikan,
Rutherford, and Chadwick.
What are the two main parts of the
atom?
What are the subatomic particles and
how do they differ from the electron?
Which particles do we find in the
nucleus?
What is radiation and what are the
three types of radioactive particles
(radiation)?
2.3: MASS RELATIONSHIPS OF
ATOMS
Define: atomic number, atomic mass
number, nucleons, nuclear charge,
atomic mass (amu), nuclide,
isotopes.
Calculate the number of protons,
neutrons and electrons for any given
atom or ion.
1
AP CHEMISTRY CHAPTER 2: ATOMS, IONS, AND COMPOUNDS
Differentiate between atomic mass
unit and the actual mass of the
nucleus. Give examples.
What is the difference between
relative atomic mass (amu) and the
actual mass of the atom expressed in
grams?
What is the definition of mole and
how does the atomic mass unit relate
to the mass of the mole?
Given the mass in grams, calculate
the number of particles (molecules,
ions or atoms) for a compound.
Calculate the mass of a compound
(ions, atoms) given the number of
particles for the given compound
(ions, atoms, molecules).
2.4: MOLECULES: ATOMS IN
COMBINATIONS
What are the three main particles that
all matter is made off? Give
examples for each.
What are the definitions of molecule,
formula, molecular formula, formula
unit, structural formula, and empirical
formula? Give examples for each.
What type of compounds is
represented by the molecular formula
and what compounds are represented
by formula units?
What type of bonds is responsible for
forming ionic compounds, covalent
compounds and metallic elements?
What is the difference between
monoatomic compounds (list the
elements that exist as monoatomic
particles), binary compounds, tertiary
compounds and polyatomic
compounds? Give examples for each.
What are allotropes? Give examples.
2
AP CHEMISTRY CHAPTER 2: ATOMS, IONS, AND COMPOUNDS
2.5: IONS AND IONIC
COMPOUNDS
What is an ion?
What is a cation? An anion?
What forces are responsible for
keeping the ions together?
Name monoatomic ions (both
positive and negative monoatomic
ions).
Give examples of positive and
negative polyatomic ions.
2.6: EXPERIMENTAL
DETERMINATION OF ATOMIC
AND MOLECULAR MASSES
How do you solve empirical formula
problems?
Know all the examples in the
textbook.
Watch pout for the combustion
problems!!!!
2.8 CHEMICAL NOMENCLATURE
How do you name ionic compounds
(Stokes system – IUPAC, and old
system)? Give examples.
Describe the process for naming
covalent compounds (IUPAC and
old system using Greek prefixes).
Give examples.
How do we determine the oxidation
number of atoms in a given
compound (ions and molecules)?
SUMMARY OF THE CHAPTER
3