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Chapter 1 Review Flashcards | StudBud
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Chapter 1 Review
Chapter 1 Review
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Questions
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1
Name this glass/equipment
round bottom flask
beaker
erlenmeyer flask
volumetric flask
2
How many significant figures are shown in 0.10001
5
2
1
6
3
Which of the following could be physically separated by techniques like distillation, filtration, and/or chromatography?
Salt Water
H2O (distilled water)
Pure 24k gold
NaCl (table salt)
4
Count the SF in the following: 0.100001
2
4
1
6
5
In chemical notation, classifying something as simply "Cu" is implying that the substance is a(n)...
a mixture
an atom
pure compound
a chemical element on the periodic table
6
What is the true importance of MODERN SI units?
they are standardized from human anatomy and artifacts
they aide in communication
they are metric and base 10
they are standardized from the laws of nature
7
This model is likely that of a...
gas
a solid
a protein
an atom
8
Which of the following measures volume with the least uncertainty?
disposable pipet
beaker
volumetric pipet
graduated cylinder
9
What is the SI unit for mass?
pound
ton
gram
kilogram
10
Which of the following would be classified as pure substance?
air
salt (NaCl)
salt water
sand
11
Name this glassware
graduated cylinder
flask
beaker
volumetric dish
12
Convert 12.1 cm to meters. (100 cm = 1 m)
0.121 m
0.012 m
1.12 cm
0.012 cm
13
Write the following number in scientific notation: 0.00134
1.34 x 10 ^ 3
1.34 x 10 ^ 4
13.4 x 10 ^ -4
1.34 x 10 ^ -3
14
Chemistry is defined as the study of __________, its properties, and the changes it undergoes.
matter
energy
life
forces
15
Which of the following is considered a homogeneous mixture?
wood
orange juice with pulp
air
iced tea with lemon
16
The usage of the equipment from the previous question would be to....
transfer liquids
measuring mass
measure liquid
measure volume
17
What metric is utilized to measure precision in lab work?
standard deviation
accuracy
median
percent error
18
A compound is determined to be
20.0%
by mass of oxygen. You analyze
25.0 g
of the compound, how much should be oxygen?
1.00 g
2.50 g
0.50 g
5.00 g
19
Which of the following is NOT an SI unit in the globally accepted system?
meter
the mole
second
an inch
20
Count the number of SF in 1000.0
6
1
5
4
21
In converting masses in the metric system, what is the base unit?
kilogram
gram
centigram
milligram
22
Physics, biology and chemistry are closely related how?
they all incorporate atomic theory in some way
they are all life sciences, and require little mathematical knowledge
they are all taught at TASD
they are not related really in any way
23
Name this location.
Leiby's
TAHS
Heisler's
Luigi's
24
What best describes what is shown here?
A chemical change
A physical change
A change in shape
change of state
25
Which of the following is considered a PURE element?
salt (NaCl)
oxygen gas (O2)
carbon monoxide (CO)
Rust (FeO)
26
Which of the following is considered a pure compound?
diamond
oxygen gas
distilled water
air
27
Multiply and round to the proper number of SF. 1.00 x 15.667=?
15
15.67
15.7
15.6
28
Which of the following is NOT comprised of atoms?
a paperclip
light from laser pointer
anthracite coal
1 oxygen atom
29
The purpose of significant figures is....
to avoid overstating or understating precision
to ensure consistency in mathematical operations
to help determine which values were actually measured and estimated
all of the above
30
The best way to remove sand from seawater would be....
filtration
using a centrifuge
distillation
chromatography
31
Name this country.
Brazil
Argentina
Panama
Chile
32
Which of the following is NOT a physical property?
shape
density
reacts with acids
color
33
The best way to remove and recover alcohol from water would be...
chromatography
distillation
evaporation
filtration
34
The BLUE darts in the image show (assuming the bullseye was the target....
accuracy but not precision
accuracy and precision
neither precision nor accuracy
precision but not accuracy
35
The type of separation technique shown here is...
distillation
filtration
evaporation
chromatography
36
Which of the following is the best test for accuracy in an experiment?
average
standard deviation
percent error
median
37
Which of the following is most closely defined as a homogeneous mixture?
distilled water
Chlorine
oxygen gas
Air
38
Which of the following would NOT be able to be separated using a physical separation (i.e. filtration, dist., etc.)?
dirty water with sand and bacteria
tap water
distilled water
oil and water
39
All of the following are energy except
light
sound
air
heat
40
Which of the following would be considered a pure compound?
carbonated water
carbon dioxide
salt water
steel
41
Which of the following would be a calibration verification from lab?
measuring the mass of the nickel on the balance 3x
determining the temperature of the room temp water from lab
qualitatively determining the color of a flame test
measuring the known boiling point of water with a new thermometer
42
What is the purpose of measuring an object in triplicate?
to ensure the data is reproducible
to take more data
to make sure the balance is calibrated and reading accurately
to make sure percent error is low
43
What is the SI unit for temperature?
the Mole
Farenheit
Kelvin
Celsius
44
Which of the following does NOT abide by the law of definite composition, and thus could have variable composition?
Pure Gold (24k)
Pure Carbon dioxide
NaCl
Tap water
45
The purpose of the last glassware/equipment is to...
measure volume
stir and heat liquids
make specifically concentrated solutions
measure mass
46
The PRIMARY and most important purpose of SI units is to
to utilize the metric system
to make measurement more subjective
make communication of results easier
to establish standardized units of measurement from natures laws
47
The meniscus curvature in measuring liquids is a top 5 lab technique. Where is it measured from?
the very bottom
none of the above
the middle
the top
