Dear AP Chemistry Students,
I hope you are all have a fun and restful summer! As school gets closer, you will want to review a few chemistry
topics in preparation for our first few classes of AP Chemistry. Below, there is a list of suggested topics for
review with clickable links to tutorials, videos, and practice problems. Do not feel like you need to go through
them all, just perhaps the ones that seem a bit fuzzy to you. You may find these resources helpful to complete
the attached problems. The attached problems are due September 8th , the end of the first week of school.
Please show work for all problems. Please contact me if you have any questions, or need any additional support
for any of these topics!
Sincerely,
Dr. Brennan
[email protected]
Topics
Units and Math
Skills
Links
http://chemed.chem.purdue.edu/genchem/topicr
eview/bp/ch1/units.html
Review of
periodic table
of elements
http://www.chem.tamu.edu/class/fyp/mathrev/m
r-scnot.html
http://www.chem.tamu.edu/class/fyp/mathrev/m
r-da.html
video:
http://www.youtube.com/watch?v=XKCZn5MLKvk
https://www.khanacademy.org/science/chemistry
/periodic-table/copy-of-periodic-table-ofelements
Review of
atoms and
elements
The types of
chemical bonds
Formulas and
Naming
https://www.khanacademy.org/science/chemistry
/atomic-structure-and-properties/introduction-tothe-atom/v/elements-and-atoms
http://www.sciencegeek.net/Chemistry/taters/Un
it1AtomicNumbers.htm
http://www.youtube.com/watch?v=iih6rJ2S6pk
or
http://www.mrsmoushon.com/8th/wpcontent/uploads/2011/11/How-to-Draw-BohrDiagrams-and-Lewis-Dot- StructuresPresentation.pdf
https://www.khanacademy.org/science/chemistry
/chemical-bonds/types-chemical-bonds/v/ioniccovalent-and-metallic-bonds
Notes
Metric System: you will need to know
the prefixes for Giga, Mega, Kilo,
Hecto, Deka, Deci, Centi, Milli, Micro,
Nano, Angstrom, Pico
Scientific Notation
Dimensional Analysis
On the attached periodic table, label
the regions. Also, write down the
patterns for ion charges, valence
electrons, dot diagrams. This will be
checked.
All links recommended, if needed
Practice problems
Bohr Model tips
Just this first link
http://www.diffen.com/difference/Covalent_Bond
s_vs_Ionic_Bonds
http://www.kentchemistry.com/links/naming/Na
Click on all the green links at the top
meCov.htm
of the page to learn about naming and
formulas for covalent compounds and
How to draw
dot structures
and Lewis
Structures
Mole
Calculations
Empirical and
Molecular
Formulas
Balancing
Chemical
Equations
Types of
Reactions
Stoichiometry
Stoichiometry,
Limiting
Reactant
https://www.khanacademy.org/science/chemistry
/chemical-bonds/copy-of-dotstructures/v/drawing-dot-structures
http://www.sciencegeek.net/Chemistry/taters/Un
it2ValenceElectrons.htm
http://www.chemteam.info/Mole/Mole.html
http://www.chemteam.info/Mole/EmpiricalMolecFormulas.html
or
http://chemed.chem.purdue.edu/genchem/probs
olv/stoichiometry/molecular2/mf2.4.html
https://www.khanacademy.org/science/chemistry
/chemical-reactions-stoichiome/balancingchemical-equations/v/balancing-chemicalequations-introduction
https://www.youtube.com/watch?v=d58UcB_Yb2
Q
https://www.khanacademy.org/science/chemistry
/chemical-reactions-stoichiome/stoichiometryideal
http://misterguch.brinkster.net/pra_equationwor
ksheets.html
http://www.sciencegeek.net/Activities/GramsGra
msStoich.html
https://www.khanacademy.org/science/chemistry
/chemical-reactions-stoichiome/limiting-reagentstoichiometry
http://www.sciencegeek.net/Activities/LimitingRe
actant2.html
the various types of ionic compounds,
as well as acids
Just this first link
Try just a few of these
Lots of helpful how-to articles here
All links are helpful.
Links to practice problems with
answers. If you are interested, check
it out
All links are helpful.
Practice problems with answers
Units and Math Skills
Units: Units are very important in chemistry. We will be using grams, meters, liters, moles, seconds, volts, and
particles (molecules/atoms/ions) throughout the year. You should be comfortable using units in a calculation,
including crossing them out and identifying the correct unit used in the answer. You also need to recognize that
1/s is the same as s-1as units in chemistry and will be expressed either way.
Make the following conversions, showing proper dimensional analysis work:
a. 45 mm = ? m ( 1 m = 103 mm)
b. 24 grams = ? cg (1 g = 102 cg)
c. 0.025 liters = ? mL (1 Liter = 103 mL)
d. 2.4 mol Cu = ? atoms (1 mole = 6.02 x 1023 atoms
Periodic Table
1) On the attached periodic table, label the regions. Also, write down the patterns for ion charges, valence
electrons, dot diagrams. This will be checked.
2) Indicate the formal family name to which each of the indicated elements belong:
iodine _______________________
potassium _____________________
argon _______________________
strontium ______________________
tellurium _______________________
3) Of the elements listed in question 3: (list them by their chemical symbols)
a. which elements are metals? _____________________________________
b. which elements are nonmetals? ___________________________________
c. which elements are metalloids? ___________________________________
Atoms and Elements
4) Complete the chart below about the particles
that make up the atom:
Proton
Neutron Electron
Relative
Mass
Charge
Location
in atom
5) Complete the chart below: (only mass #s are
given, you must look up the atomic #s)
# of
# of
# of
protons
neutrons electrons
28
Si
60
Ni
195
Pt
238
U
6) From the data below, determine the average atomic mass of the given element:
Isotope (Mass #)
203.97302 204.97444 206.97587 207.97663
Abundance by %
1.40000% 24.10000% 22.10000% 52.40000%
Average atomic mass:____________
7) Bohr Model:
a. How can you use the periodic table to determine the number of energy levels an atom has?
b. What are valence electrons? How can you tell how many valence electrons an atom will have?
c. Draw the Bohr model for Neon-20
d. Draw the Bohr model for Potassium – 39
Ionic & Covalent Compounds
8) a. When metals form ions, they tend to gain/lose electrons and become +/- charged.
b. When non-metals form ions, they tend to gain/lose electrons and become +/- charged.
c. Which group of elements do not form ions? why?
d. Based on its location in the periodic table, what is the most stable ion for:
Al _______
Ca _______
S ________
I _________
Cs ______
9) a. Ionic compounds transfer / share electrons between two metals / metal and a nonmetal / two nonmetals.
b. Covalent compounds transfer / share electrons between two metals / metal and a nonmetal / two nonmetals.
10) Based on their locations in the periodic table, write the formula of the ionic compounds formed between:
a. gallium and fluorine ____________ b. lithium and iodine ____________
c. aluminum and oxygen ____________ d. magnesium and nitrogen ___________
11) Name the following ionic compounds. Use a polyatomic ion list from the internet if needed.
a. AlF3 _______________________________
b. Fe(OH)2 ________________________________
c. Cu(NO3)2 ____________________________
d. Ba(ClO4)2 ______________________________
e. Li3PO4 _______________________________
f. Cr2(CO3)3 ______________________________
12) Write the formulas for the following ionic compounds. Use a polyatomic ion list from the internet if needed.
a. potassium chromate ___________________
b. magnesium chlorate __________________
c. iron (III) carbonate ___________________
d. tin (IV) sulfate ____________________
e. lead (IV) arsenate ____________________
f. silver sulfide _______________________
13) Write the formulas of the following binary covalent compounds:
a. tetraphosphorus decoxide ______________
b. dinitrogen tetroxide __________________
c. sulfur trioxide _____________________
d. trinitrogen monoxide _________________
14) Write the names of the following binary covalent compounds:
a. SCl6 _____________________________
b. IBr5 _______________________________
c. XeF4 _____________________________
d. NO _______________________________
15)Draw the best Lewis Structure for the following Covalent Compounds or Polyatomic Ions:
CO2
NH3
BF3
NH4+1
C2H2
H2CO3
Chemical Reactions
16) Write the following as a chemical equation. Predict products if needed and include phases:
a. Sulfur solid reacts with iron solid to form solid iron(III) sulfide.
b. Magnesium fluoride solid and hydrochloric acid react to in a double replacement to form two products.
17)Balance the following equations and indicate the type of reaction taking place:
a.
____ Ca(OH)2 + ____ Al2(SO4)3  ____ CaSO4 + ____ Al(OH)3
Type of reaction: _________________
b.
____ Mg + ____ Fe2O3  ____ Fe + ____ MgO
Type of reaction: _________________
c.
____ C2H4 + ____ O2  ____ CO2 + ____ H2O
Type of reaction: _________________
d.
____ PbSO4  ____ PbSO3 + ____ O2
Type of reaction: _________________
e.
____ H2O + ____ SO3  ____ H2SO4
Type of reaction: _________________
Formulas and Moles, Stoichiometry
18) A compound has two boron atoms and six hydrogen atoms.
a. What is its molecular formula? ________________ b. What is its empirical formula? ___________________
19) Write the empirical formula for:
a. Al2Br6 _____________
b. C8H10 _____________
20) Determine the molar mass of:
a. H2S _____________________
c. C4H8O2 _______________
b. Sb2(S2O3)5 ______________________
21) If you have 5.8 x 10 22 molecules of hydrogen sulfide, how much would it weigh?
22) 500 grams of sodium hydroxide would contain how many formula units (particles)?
23) Calculate the percentage (by mass) of oxygen in:
a. sulfur dioxide ________________
b. aluminum nitrate ________________
24) Determine the empirical formula of a compound that contains 11.66 g of iron and 5.01 g of oxygen:
25) Determine the empirical and molecular formula of a compound that contains:
49.5 % carbon, 5.15% hydrogen, 28.9% nitrogen and 16.5 % oxygen with a molar mass of 195 g/mol.
Empirical formula = ___________________ Molecular Formula = _______________________
26) Given the reaction: ___ Na2SiO3 + ___ HF  ____ H2SiF6 + ____ NaF + _____ H2O
a. How many grams of NaF form when .500 mol of HF are completely consumed? _________________
b. How many grams of water form if 125 g of NaF formed? ______________________
27) Given the reaction: ____ C6H14 + ____ O2  ____ CO2 + ____ H2O
a. 42.0 grams of hexane (C6H14) are combined with 80.0 of oxygen. What is the limiting reagent (reactant)?
b. What mass of the excess reagent is left over? ________________
c. What mass of water vapor is produced? _________________
d. If the actual yield of water vapor is 20.6 grams, then what is the percent yield? _____________