La Salle College High School
AP Chemistry
Summer Homework Assignment
DUE on first day
of class! Email me with
questions as a last resort:
[email protected]
Name: _______________________________________________
Remember 1 cm3 = 1 mL
1. Metric Conversions.
GIVEN METRIC UNIT
1 L = 1 dm3
DESIRED METRIC UNIT
1.42 cm
mm
1.21 x 102 cm
m
674.5 nm
cm
2.345 x 104 m
km
809 mL
L
8.201 x 10-7 L
nL
256000 cm3
L
4.15 x 10-10 L
cm3
9.10 x 1011 µg
g
0.006793 kg
mg
2. Would you expect the following atoms to gain or lose electrons when forming ions? What ion
(symbol and charge) is most likely in each case?
ELEMENT
Li
Mg
N
S
Cl
Al
GAIN OR LOSE
ION FORMED
3. Chemical Nomenclature: You should be able to complete this using a periodic table and
MINIMAL help from other sources.
ITEM
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
AA
BB
CC
DD
EE
FF
GG
HH
II
JJ
CHEMICAL FORMULA
KBr
MgS
AlI3
CHEMICAL NAME
Strontium fluoride
Potassium nitride
Magnesium phosphide
Hg2O
FeBr3
CoS
TiCl4
Tin (II) nitride
Cobalt (III) iodide
Mercury (II) oxide
Chromium (VI) sulfide
SrSO3
LiNO2
KMnO4
K2Cr2O7
Chromium (III) hydroxide
Magnesium cyanide
Lead (IV) carbonate
Ammonium acetate
N2O4
ICl3
SO2
P2S5
Diboron trioxide
Arsenic pentafluoride
Dinitrogen monoxide
Sulfur hexachloride
HC2H3O2
H3PO3
HCl
Hydrofluoric acid
Sulfurous acid
Phosphoric acid
4. Chemical Reactions – Write and BALANCE the following reactions.
a. Glucose (C6H12O6) reacts with oxygen gas to produce gaseous carbon dioxide and water vapor.
b. Solid iron (III) sulfide reacts with gaseous hydrogen chloride to form solid iron (III) chloride and
hydrogen sulfide gas.
c. Carbon disulfide liquid reacts with ammonia gas to produce hydrogen sulfide gas and solid ammonium
thiocyanate (NH4SCN).
d. Aqueous solutions of lead (II) nitrate and sodium phosphate are mixed resulting in the precipitate
formation of lead (II) phosphate and aqueous sodium nitrate as the other product.
e. Solid zinc reacts with aqueous hydrochloric acid to form aqueous zinc chloride and hydrogen gas.
f. Aqueous calcium hydroxide is neutralized by aqueous phosphoric acid to produce solid calcium
phosphate and water.
5. Chemical Calculations – You must show the work (on a separate sheet of paper) that leads to
your answer to receive credit. Write your answers in the blanks to the left of the question.
Remember that:
1 mole element = 6.022 x 1023 atoms
1 mole compound = 6.022 x 1023 molecules or formula units
 molecules refer to covalent compounds while formula units refer to ionic
compounds (mathematically they mean the same thing)
Chloral hydrate (C2H3Cl3O2) is a drug formerly used as a sedative and hypnotic.
________________ (i) Calculate the molar mass of chloral hydrate.
________________ (ii) How many moles of chloral hydrate molecules are in 500.0 g of chloral hydrate?
________________ (iii) What is the mass in grams of 2.00 x 10-2 mol chloral hydrate?
________________ (iv) What number of chlorine atoms are in 5.00 g chloral hydrate?
________________ (v) What mass of chloral hydrate would contain 1.00 g Cl?
________________ (vi) What is the mass of exactly 500 molecules of chloral hydrate?
6. You should also know ALL of the polyatomic ions on the next page. Pay attention to those ions
ending in –ite versus – ate. You can expect mixed-up polyatomic ion quizzes the first week of
school, followed by another week of daily formula-writing quizzes.
Helpful Tip: compare the polyatomic ions for the following halogens (notice what changes and what
stays the same). Notice that fluorine is NOT include – it does not form polyatomic ions.
(CLO)-1
HYPOCHLORITE
(BRO)-1
HYPOBROMITE
(IO)-1
HYPOIODITE
(ClO2)-1
chlorite
(BrO2)-1
bromite
(IO2)-1
iodite
(ClO3)-1
chlorate
(BrO3)-1
bromate
(IO3)-1
iodate
(ClO4)-1
perchlorate
(BrO4)-1
perbromate
(IO4)-1
periodate
POLYATOMIC ION NAME
Ammonium
Acetate
Cyanide
Hydrogen carbonate
Hydrogen sulfate
Hydroxide
SYMBOL and OXIDATION NO.
NH4+1
CH3COO-1 or C2H3O2-1
CN - 1
HCO3-1
HSO4- 1
OH -1
Hypochlorite
NO3-1
NO2-1
ClO-1
Chlorite
ClO2-1
Chlorate
ClO3-1
Perchlorate
ClO4-1
Permanganate
Thiocyanate
MnO4-1
IO3-1
SCN- 1
Oxalate
C2O4- 2
Carbonate
CO3-2
CrO4-2
Cr2O7-2
SO4-2
SO3-2
S2O3-2
AsO4-3
PO4-3
PO3-3
Nitrate
Nitrite
Iodate
Chromate
Dichromate
Sulfate
Sulfite
Thiosulfate
Arsenate
Phosphate
Phosphite