The following assignments must be completed and turned in by the
Due Date: August 23, 2016. Take time throughout the summer to
complete these review assignments.
AP Chemistry
Summer Assignment
!
Complete the “Chapter Questions”
!
Complete the “AP Chemical Naming and Formula Worksheet”
!
Memorize a) the metric prefixes, b) the lists of strong acids and
strong bases, c) the 40+ common ions, and d) the solubility rules
found in the following pages.
!
You will have a quizzes on a) the memorized items, b) naming,
and c) the Chapter Questions at the beginning of the school year.
Due August 23, 2016
To Get Help
1. Access the following tutorial sites:
a. http://science.widener.edu/svb/tutorial/
b. http://www.learnchem.net/
c. http://quizlet.com/5207651/ap-chemistry-exam-review-flashcards/
d. http://www.funnelbrain.com/sid-21-ap-chemistry.html
e. http://www.wwnorton.com/college/chemistry/chemistry3/
f. http://sites.tufts.edu/andrewrosen/2012/03/03/ap-chemistryreview-sheets/
2. Contact Mr. Evans: [email protected]
Oakland Technical High School
AP Chemistry *Chapter Questions
5.
Complete the following problems on your own paper.
Chemical Foundations
1.
Which of the following statements (hypotheses) could
be tested by quantitative measurement?
a. Ty Cobb was a better hitter than Pete Rose.
b. Ivory soap is 99
44
% pure.
100
6.
c. Rolaids consumes 47 times its weight in excess
stomach acid.
2.
3.
4.
A student performed an analysis of a sample for its
calcium content and got the following results:
14.92%
14.91%
14.88%
14.91%
The actual amount of calcium in the sample is 15.70%.
What conclusion can you draw about the accuracy and
precision of these results?
Calculate the percent error for the following
measurements.
a. The density of an aluminum block determined in an
experiment was 2.64 g/cm3. (True value 2.70 g/cm3.)
b. The experimental determination of iron in ore was
16.48%.
(True value 16.12%)
Round off each of the following numbers to two
significant figures, and write the answers in exponential
notation.
a. 0.00031254
c. 35,900
b. 31,254,000
d. 0.00000399
*The chapter questions come from Zumdahl, S.S. 2000, Chemistry, 5th ed.
Boston, Houghton Mifflin and from Lorraine Kyle Cedar Park , Texas.
Use exponential notation to express the number 480 to
a. one significant figure
b. two significant figures
c. three significant figures
d four significant figures
Perform the following mathematical operations,
andexpress each result to the correct number of
significant figures.
a.
97.381 + 4.2502 + 0.99195
b.
171.5 + 72.915 – 8.23
c.
0.102 x0.0821x 273
1.01
d. (9.04 - 8.23 + 21.954 + 81.0) ÷ 3.1416
7.
8.
9.
You’re planning to buy a new car. One model that you’re
considering gets 32 miles to a gallon of gasoline in highway
travel. The one that your spouse likes gets 14 kilometers
to the liter. Which car has the better gas mileage?
You pass a road sign saying “New York 112 km.” If you
drive at a constant speed of 65 mi/h, how long should it
take you to reach New York? If your car gets 28 miles to
the gallon, how many liters of gasoline are necessary to
travel 112 km?
You have a 1.0 cm3 sample of lead and a 1.0 cm3 sample
of glass. You drop each in separate beakers of water.
How do the volumes of water displaced by each sample
compare? Explain.
10.
A person has a temperature of 102.5°F. What is this
temperature on the Celsius scale? on the Kelvin scale?
11.
Diamonds are measured in carats, and 1 carat = 0.200 g.
The density of diamond is 3.51 g/cm3. What is the volume
of a 5.0 carat diamond?
12.
The volume of a diamond is found to be 2.8 mL. What is
the mass of the diamond in carats? (See question #18)
13.
A sample containing 33.42 g of metal pellets is poured into
a graduated cylinder initially containing 12.7 mL of water,
causing the water level in the cylinder to rise to 21.6 mL.
Calculate the density of the metal.
14.
Two spherical objects have the same mass. One floats on
water; the other sinks. Which object has the greater
diameter? Explain your answer.
15.
Classify each of the following as a mixture or a pure
substance. Of the pure substances, which are elements and
which are compounds?
a. water
f. uranium
b. blood
g. wine
c. the oceans
h. leather
d. iron
i. table salt (NaCl)
e. brass
16.
List four indications that a chemical change (reaction) has
occurred.
17.
If you place a glass rod over a burning candle, the glass
appears to turn black. What is happening to each of the
following (physical change, chemical change, both, or
neither) as the candle burns?
Explain each answer.
a.
the wax
b.
the wick
c.
the glass rod
Atoms, Molecules and Ions
18.
How many protons and neutrons are contained in the
nucleus of each of the following atoms? In an atom of
each element, how many electrons are present?
a. 42
c. 76
e. 73
32 Ge
33 As
22 Ti
b.
64
30
Zn
d.
86
36
Kr
f.
41
19
K
19.
Write the atomic symbol (
) for each of the
isotopes described below.
a. Z = 8, number of neutrons = 9
b. the isotope of chlorine in which A = 37
c. Z = 27, A = 60
d. number of protons = 26, the number of neutrons = 31
e. the isotope of I with a mass number of 131
20.
The element copper has naturally occurring isotopes
with mass numbers of 63 and 65. The relative abundance
atomic masses are 69.2% for mass = 62.93 amu, and 30.8%
for mass = 64.93 amu. Calculate the average atomic mass of
copper.
21.
In the periodic table, how many elements are found in
a. Group 2A (2)
c. the nickel group?
b. the oxygen family?
d. Group 8A (18)
22.
An ion contains 50 protons, 68 neutrons, and 48 electrons.
What is its symbol?
23.
Which of the following sets of elements are all in the
same group in the periodic table?
a. N, P, O
c. Rb, Sn
b. C, Si, Ge
d. Mg, Ca
24.
25.
26.
Identify each of the following elements:
a. a member of the same family as oxygen whose most
stable ion contains 54 electrons
b. a member of the alkali metal family whose most stable
ion contains 36 electrons
c. a noble gas with 18 protons in the nucleus
d. a halogen with 85 protons and 85 electrons
Would you expect each of the following atoms to gain or
lose electrons when forming ions? What ion is the most
likely in each case?
a. Na
d. Ba
g. Al
b. Sr
e. I
h. S
c. P
f. O
For each of the following ions, indicate the total number
of protons and electrons in the ion. For the positive ions
in the list, predict the formula of the simplest compound
formed between each positive ion and the oxide ion. For
the negative ions in the list, predict the formula of the
simplest compound formed between each negative ion and
the aluminum ion.
a. Fe2+
c. Ba2+ e. S2- g. Br3+
b. Fe
d. Cs+
f. P3- h. N3-ion
27.
28.
The designations 1A through 8A used for certain
families of the periodic table are helpful for predicting the
charges on ions in binary ionic compounds. (In these
compounds, the metals generally take on a positive charge
equal to the family number, while the nonmetals take on a
negative charge equal to the family number minus eight.
Thus the compound between sodium and chlorine contains Na+
ions and Cl- ions and has the formula of NaCl.) Predict
the formula and the name of the binary compound formed
from the following pairs of elements.
a. Ca and N
e. Ba and I
b. K and O
f. Al and Se
c. Rb and F
g. Cs and P
d. Mg and S
h. Al and Br
An element’s most stable ion forms an ionic compound
with bromine, having the formula XBr2. If the ion of
element X has a mass number of 230 and has 86 electrons,
what is the identity of the element, and how many neutrons
does it have?
Chemical Reactions
29.
Predict and balance the following synthesis (combination)
reactions.
a. Sulfur dioxide gas is bubbled through water.
b. A pea-sized piece of sodium is added to a container of iodine
vapor.
30. .Predict and balance the following decomposition reactions.
a. A sample of calcium carbonate is heated.
b. Liquid hydrogen peroxide is warmed.
c. Molten aluminum chloride is electrolyzed.
31.
Predict and balance the following single replacement
reactions.
a. Liquid bromine is added to a container of sodium
iodide crystals.
b. An aluminum strip is immersed in a solution of silver
nitrate.
c. Zinc pellets are added to a hydrochloric acid solution.
d. Chlorine gas is bubbled into a solution of aluminum
fluoride.
32.
Predict and balance the following double replacement
(metathesis) reactions. All reactants are aqueous. Note:
Some of these reactions do not go to completion.
a. Silver nitrate and potassium chromate are mixed
together
b. Ammonium chloride and cobalt(II) sulfate are mixed
together.
c. Lithium hydroxide and sodium chromate are mixed
together.
33.
Predict and balance the following combustion reactions.
a. Ethanol (ethyl alcohol) is burned completely in air.
b. Solid zinc sulfide is heated in an excess of oxygen.
c. Lithium metal is burned in air.