Honors Chemistry: UNIT TEST 1
ALLEN
Chapter 1: Section 1.1 and 1.3
• Definition of Chemistry
• Five types of Chemistry
• Scientific Method
Chapter 2: Section 2.1, 2.2, 2.3, and 2.4
• What is matter?
• States of matter
• Mixtures
• Elements and Compounds
• Law of Conservation of Mass
Chapter 3: All Sections
• Accuracy, precision, uncertainty, and significant figures
• SI system of units
• Dimensional Analysis
• Density
*All calculations must show equation, units, and correct number of significant
figures!!
Please remember to bring a scientific calculator. I do not have any extra in the classroom.
*
*Jf you have any additional questions,
please email me at caitIin.a1Ienww-p.org.
GOOD LUCK AND STUDY!!!!
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Part A Completion
1. element or compound
2. compound or element
mixture
heterogeneous or homogeneous
homogeneous or heterogeneous
solutions
3. elements
4. ratio or proportions
5. chemical
phase
physical
distillation
6.
7.
8.
9.
10.
Part B True-False
10. AT
11. ST
8. ST
9. AT
9. ST
10. NT
17. d
18. g
15. e
16. b
13. c
14. a
substance
mixture
symbol
C
K
Part B True-False
Part C Matching
12. f
fTh
..
Part A Completion
1.
2.
3.
4.
5.
6.
7.
‘
11. AT
12. AT
Part C Matching
13. d
Part D Questions and Problems
19. a. homogeneous
c. substance
d. mixture
b. mixture
18. a. compound
d. compound
b. element
c. compound
19. a. K
e. element
b.Pb
c. Na
20. a. copper
b. hydrogen
//
C.
silver
Section 22
1. distillation, evaporation
2. a mixture with a uniform composition
throughout
c. heterogeneous
3. a. homogeneous
b. heterogeneous
4. a. substance
b. mixture
c. mixture
d. substance
17.e
Part D Questions and Problen
d. heterogeneous
e. heterogeneous
Ii heterogeneous
c. homogeneous
20. a. substance
15.b
16. c
14. a
Section 2.3
1. nitrogen, hydrogen
2. a. lead
c. gold
b. potassium
3. a. compound
d. iron
c. element
b. compound
4.a.Sn
d. mixture
c.Ag
d.c
b.Na
5. No. Jt could be a liquid element, a liquid
compound, or a mixture of liquids,
6. c
d. Cl
e.S
d. iron
e. nitrogen
)
Name
Date
22. Concentrated hydrochJo
acid has a density of 1.19
mass, in grams of 2.00
g/mL What Is the
lIters of this acid?
a. 2.38 x 1O’ g
c. 4,20 x io g
6. 2,38 g
d. 4.20 x icr
4g
23. A conversion factor:
a. isequaltol,
6. is a ratio of equivalent
c. does not change the measurementa
value of ameasuremeni
d. ailoftheabove
Class
SCIENTIFIC MEASUREMENT
tLatht
T2
A. Matching
24. Chlorine boils at 239
K What is the boiling
point of chlorine expressed
degrees Celsius?
l]
a. 93CC
c. -61CC
6. 34CC
d. -C
25. A student measures
a volume as 25 ml, whereas
the correct volume is
23 niL, What Is the
percent error?
a, 0.087%
c. 0.92%
6. 8.7%
d. a,o
Match each description in Column B with the correct term in Column A. Write the
letter of the correct description on the line.
Column A
Column B
1. error
a. a measure of the pull of gravity on a given mass
2. precision
6. concerned with the reproducibility of measurements
3. 1 liter
c. a ratio of equivalent measurements
4. temperature
d. originally defined as the mass nfl L of water at 4C
5. density
e. a way to analyze and solve problems, using the units of a
measurement
6. conversion
factor
L
the ratio of the mass of an object to its volume
7. dimensional
analysis
g.
the degree of hotness or coldness of an object
B. weight
h.closenessofameasurernentto,thuevalu,,
9. 1 kilogram
I.
10. accuracy
C. True-False
Class75’ each of these statements
as always
true, AT; sometimes true, ST or
never true, N
26. Precise measurements are
also accurate measurements.
— 27. Zeros in
a measurement are significant.
28. in converting between
units, it is necessary to use more
than one
Conversion factor,
difference between the experimental value and the
accepted value
29. When converting complex
units, you should check that the
units cancel,
the conversion factors are
correct, and the answer has the
correct units.
30. The weight of an object
changes with its location,
..._31.
j. the volume of a cube 10 cm on each edge
B. Multiple Choice
Choose the best answer and write its letter on the line,
32. The density of a substance
decreases at its
ii. How many significant figures are in the measurement 2103.2 g?
a.2
c.4
b 3
d.5
temperature increases.
33. Heat transfers from objects
at high temperatures to objects
at low
temperams,
12. Which of these equalities is nor correct?
a. lOOcg=lg
c. 3
1cm
l
mL
6. i000nim=lm
d. lOkg=ig
-
34. To convert density from
3 to kglm
g/cm
, one of the conversion
3
factors
you could use Is mg
ikg.
3
-
13. How many of the zeros in the measurement 0.000 040 200 m are
significant?
a.2
c.7
b.3
d.8
D.Problems
Solve the problems in the space
pror.’i4e4 Show your work
—
The density of pure gold is
19.3 g/cm Is the metal pure
gold?
14. How many milligrams are in 2,5 kg?
a. 2.5 x i0
mg
6
6. 25mg
C. 2.5 X 4
l0
m
g
d. 2.5x lO
mg
2
15. The closeness of a measurement to
Its true value is a measure of its:
a. usefulness,
c. accuracy
6. precision,
4. reproducibility
16. Which of these measurements is
expressed to three significant figures?
a. 0.070 mm
c. 7007 mg
b. 7.30 x iO km
d. 0.007 m
17. Ametrjcunitofvolumeisthe:
a.L
b.mg.
b. 13
.OOm—osim
c,kni.
d.IC
18. The number of seconds in a 40-hour
work week can be calculated as
follows:
a, flog
6. 1 aX
x !!i!!!- X
60s
60mm
—-—
60s
x
=
flOmffi
19. The metric prefix kilo- means:
a. 100 times smaller.
6 1000 times larger
_,
C.
40 h x 60 mm
605
60 mm
60s
d. 40 h
c. 1000 times smaller,
d. 100 times larger
20. What is the volume of 60.0 g of ether
if the density of ether is 0.70 gImL?
a. 86rnL
c. 2.4xllr
mL
2
6. l.2x10
mL
2
4. 42mL
21. The temperature reading of l4C
corresponds to a Kelvin reading of
a. 297.6K,
c. 287K
6. —287K
d. 259K.
—
36. Perform the following
operations, Make sure that your
answers have the correc
number of significant digits.
a. 4
.l5cmx 1.8cm
c. (1.7 X 10’ ml
X
(3.72 x l0 in)
37. Calculate the density of a liquid that
has a mass of 14.0 g and a volume
of 18.0 cm
,
3
Practice Problems
your notebook, solve the following problemi
SECTION 3.1 MEASUREMENTS AND THEIR UNCERTAINTY
object three
Using different rulers, Bruce and Pete each measure the length of the same
times.
the average
1. Bruce’s three measurements are 19 cm, 20 cm, and 22 cm. Calculate
value of his measurements and express the answer with the correct number of
significant figures.
2. Pete’s three measurements are 20.9 cm, 21.0 cm, and 21.0 cm. Calculate the
average value of his measurements and express the answer with the correct
number of significant figures.
3. Multiply the answer to problem 1 by the answer to problem 2. Express the
answer in scientific notation with the correct number of significant figures.
4. Whose measurements are more precise?
5. The actual length of the object is 20 cm. Whose measurements are more
accurate?
6. What Is the error of Pete’s average measurement?
7. What is the percent error of Pete’s average measurement?
8.. Four boarth eactrsneasunngL. n are laid end to end.Multiply to determine
the combined length of the boards, expressed with the correct number of
significant figures.
SECTION 3.2 THE INTERNATIONAL SYSTEM OF UNITS (SI)
Afish tank measures 0,40 meter long by 0,20 meter wide by 0.30 meter high.
1. What is the width of the tank in centimeters?
2. What is the length of the tank in millimeters?
3. What is the volume of the tank In liters?
4. What is the mass of water, in grams, that would fill the tank hallway?
5. An astronaut in her spacesuit weighs 300 lb on Earth. What would her weight
be on the moon?
6. How many nanoseconds are there in one minute?
7. A chemical reaction takes place at 20CC. What is this temperature in kelvins?
8. A typical refrigerator keeps food at 277 K. What is this temperature in degrees
Celsius?
SECTION33 CONVERSION PROBLEMS
What
1. The population of San Francisco is 750,000 in an area of 49 square miles.
is the population density in San Francisco? Express your answer in people per
2 640 acres)
acre. (1 mi
2. A sugar-free powdered drink mix sells for $2.99 per can. Each can of the mix
contains 50.2 g of powder, which, when added to water, will make 8 quarts of
drink. What is the cost of the powdered drink mix in dollars/Ib? (454 g = 1 Ib)
3. A car is travelling at 60 miles per hour. Express this speed in kilometers per hour
(km/h). (Imi = 1.609 km)
4. A whole chicken sells for $7.06 and has a mass of 1.5 kg. A beef shank sells for
$10.00 with a mass of 2.5 kg. Compare the per pound cost for each item. (1 kg =
2.2 Ib)
5. How many seconds are there in a day? (1 day = 24 h)
6. The speed limit on a certain highway is 72 km/h. What is this speed in cm/s?
. What is the mass, in kilograms, of one cubic
5
7. Gold has a density of 19.3 g/cm
meter of gold?
8. An automobile can travel 40.0 miles on one gallon of gasoline. How many
kilometers per liter is this? (1.61 km = 1 ml; 1 L = 0.264 gal)
9. Suppose that gold is selling at $375/ounce. How many milligrams of gold could
you buy for one cent? (16 ox 1 Ib; 1 lb 454 g)
SECTION 3.4 DENSITY
Use the data in Table 3.7 to solve problems 1-4.
1. What is the mass at 20CC of 5 hers of air?
2. A balloon filled with air is
balloon float to the ceiling or sink to the floor?
3. What is the volume in liters of a kilogram of ice at 0CC?
4. What is the mass ofa bar ofaluminurn measuring 1.0cm by 1.0cm by 10.0 cm?
Name
Date
20. When iron and oxygen combine to form iron
oxide,
a. a physical change occurs.
c. a change In mass occurs.
b. a change of state occurs.
di a chemical change occurs.
Class
5
M
ATTER AND CHANGE
C. True-False
Classifr each of these statements as always true, AT;
sometimes true, ST; or never true NT
21. Any part of a sample with uniform composition
and properties is
called a phase.
4
t
cvxu<
22. A substance does not have a fixed composition.
A. Matching
23. A heterogeneous mixture consists of two or
more phases.
Match each description in Column B to the correct term in Column A. Write the letter
of the correct description on the Line.
Column A
24. A vapor is a gaseous substance that is
generally a liquid at room
temperature.
Column B
I. product
a. matter that flows but has a definite volume
2. phase
b. amount of matter that an object contains
3. physical change
c. starting substance in a chemical reaction
25. A compound can be physically separated into
its elements.
D. Completion
Fill in the word(s) that will make each statement true.
4. liquid
di homogeneous mixture
5. mass
e. the simplest form of matter with a unique set of
properties
6. element
f. a part of a sample with uniform composition and
properties
7. solid
g. alters a substance without changing its
composition
8. solution
K. matter with a definite shape and volume
9. compound
L substance formed in a chemical reaction
26. During chemical and physical changes, substances can
absorb or give off
26
26.
27. During
27
a liquid is boiled to produce a vapor that
is then condensed again to a llquid.
27.
28. Mixtures differ from substances because the composition
ofamixturecan
28
28.
29. When iron and sulfur combine to form iron sulfide, a
29
change takes place.
29.
,
10. reactant
j. contains two or more elements chemically
combined in a fixed proportion
B. Multiple Choice
il of the following are general characteristics of a substance in the
liquid state except
a. definite volume.
c. not easily compressed.
b. able to flow.
d. definite shape.
12. In the chemical reaction iron plus oxygen
iron oxide,
a. iron oxide Is a reactant.
c. oxygen is a product.
b. iron is a reactant.
d. iron is a product.
13. Which term does not fit with the others listed?
a. solid
c. gas
b. reactant
di liquid
14. The chemical symbol for sodium is
a. NA.
ft. Na.
31. Elements combine chemically to form
31
32. Fe is the chemical symbol for the element
Choose the best answer and write its letter on the line providea
11
30
30. A
property is a quality of a substance that can
be observed or measured without changing the composition
of the substance.
33. A
33
31.
......,........
mixture has a uniform composition throughout.
34, In any physical or chemical change, mass is
30.
34
35. In a chemical reaction, the new substances formed are
called
35
32.
33.
34.
35.
I E. Essay
Write a short essayfor the following
36. Distinguish between physical changes and chemical changes
and give two
examples of each. Then, list three clues that are often indications of
chemical
changes.
SO.
d. So.
15. A basketball has more mass than a golf ball because:
a. the basketball takes up more space.
K. the basketball contains more matter.
c. the golf ball contains a different kind of matter.
di the gulf ball has an indefinite composition.
16. A gas is a form of matter that
a. has a definite volume.
Ii. is generally a liquid or solid at room temperature.
c. takes the shape and volume of its container.
d. is difficult to compress.
11. Homogeneous mixtures
a. are always liquids.
K. consist of two or more phases.
c. have a composition that is fixed.
d. ate known as solutions.
18. A compound
a. is a substance.
b. has a composition that varies.
c. can be physically separated into its elements.
d. has properties similar to those of its elements.
19. Physical properties of a substance include
a. color and odor.
c. malleability
h. melting and boding points.
di all of the above.
r SECTION 2.1 PROPERTIES OF MATTER
1. Which of the following is nor a physical change?
a. dissolving sugar in water
c.
evaporating sea water to obtain salt
b. burning gasoline in an engine
di slicing a piece of bread
2. Which of the following is nota property of a gas?
a. has a definite shape
c. assumes the shape of its container
b. has an indefinite volume
is easily compressed
3. Which of the following is nota physical property
of sucrose?
a. solid at room temperature
c. dissolves in water
b. decomposes when heated
di tastes sweet
4. Which of the following is in a different physical
state at room temperature than
the
other three?
a. salt
b. sugar
c. flour
di water
5. Complete the following table.
Physical state
Definite Shape?
Definite Volume?
Easily Compressed?
gas
no
no
yes
ing questions.
Use the Table 2.1 to answer the follow
gas?
8. Which substance is a colored
temperature than water?
7. Which liquids boil at a lower
s as extensive or intensive.
8. Classify the following propertie
c. mass
me
volu
b.
a. color
G.
point
SECTION 2.4 CHEMICAL REACTIONS
I. Which one of the following is a chemical change?
a. Gasoline boils.
c. Gasoline burns.
b. Oxygen is added to gasoline.
d. Gasoline is poured into a tank.
2. Classify each of the following changes as physical or chemjcaj.
a. A puddle is dried by the sun.
c. Bread Is toasted,
b. A dark cloth is faded by sunlight.
d. Soap is mixed with water.
3. Carbon dioxide plus water yields carbonic acid.
a. Name the product(s) of this reaction.
b. Name the reactant(s) of this reaction.
4. If 44 grams of carbon dioxide react completely with 18 grams of water, what Is
the mass of carbonjc acid formed?
5. In an engine, octane combines with oxygen to form carbon dioxide and water. If
228 grams of octane combine completely with 80 grains of oxygen to form 70.4
grams of caron dioxide, what mass of water Is formed?
6. What is the nrne of the chemical law art which problems 4 and 5 are based?
SN
/
\\
Ptc&tuu I J
A. Matching
1.i
2. b
5•f
6. c
7. e
3. j
4.g
A. Matching
8.a
9. d
10. h
Li
5.b,
2. f
3. g
6. e
7. h
8.d
9.
10.
j
4.a
B. Multiple Choice
11. d
12. d
13. b
14. a
15.c
16. b
17. a
18. c
19. b
20.a
B. Multiple Choice
21. d
22. a
23. d
24. d
25.b
11.
12.
13.
14.
29. AT
30. ST
31. NT
ST
21. AT
22. NT
31 ST
33. AT
34. NT
18. a
19. d
20. d
23. AT
24. ST
25. NT
D. Completion
D. Problems
980
15 3
g/cm no
;
volume
64 cm
36. a. 4.15 cm X 1.8 cm 7.5 Cm
b. 13.00 m 0.54 m = 12.46 m
(1.7 X i0 m) X (3.72 X i0 m)
= 6 3 x io m
2
35. Density
15. b
16. c
17. d
C. True-False
C. True-False
26. ST
27. ST
d
b
b
b
=
—
26.
27.
28
29.
30.
energy
distillation.
vary
chemical
physical
31. compounds
32. iron
33. homogeneous
34. conserved
35. products
E. Essay
36. A physical change alters a
substance without
changing its composition. Meltin
g or boiling
are physical changes. In a chemic
al change,
one or more substances change
into one or
more new substances. Examp
les of chemical
change include the rusting
of iron, the
reaction between iron and sulf
ui to produce
iron sulfide, and the burning
of wood. Some
possible clues to chemical cha
nge are a
transfer of energy, color
change, the
production of gas, and the
formation of a
precipitate.
o
b
1u
4
b. L
c
L1c-
I
4
Practice Problems 3
Section 3.1
5. Bruce’s
6. 1cm
1. 20 cm
2. 21.0cm
2
3. 4.2 X 102 cm
7. 5%
8. 6.Om
4. Pete’s
Section 3.2
1. 20cm
2. 400 mm
5. 501b
6. 6 X 10
3. 24 liters
4. 12,000 g
7. 293 K
8. 4°C
Section 3.3
Section 3.4
1. 6.00 grams
2. The balloon will float. Air is less dense than
carbon dioxide.
1.09 liters
4 27 g
.
1. pop. density
750,000 people
=
X
1
640 acres
24 people/acre
dollars
454
1 fj
ç.ai
1 lb
50.2
dollars
27.0
lb
1.609km = 96.54 km/h
x
=
2. cost
=
pi1
60
j—
the beef steak
4. The chicken costs $2.14/ib,
steak is less
beef
costs $1.82/lb. The
expensive per pound..
X
X
5 1 la X
=
86400 s
1 ,,at6
1$
100cm
1000 p
4
6. 72
60 s
60
1
3 cm/s
= 2.0 X10
1kg
00
1i\3
1
4
9
X
7. 1X19.3Ez
iooo
4
1p
kg
= 1.93 x
afi
-w
xc
8. 40.0
-
X
)
X
=
1j)
19
9. 1.00 dpRr x 375 dplls>< 16p
1000mg
454
—=75.7mg
1
X
x
17.0 km/L