SCIN 131 - Introduction to Chemistry » Summer 2019 » Week 1 Lesson Quiz
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Question #1
A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions is referred to as:
A.
none of these.
B.
a theory.
C.
a law.
D.
a hypothesis.
Question #2
Which of the following statement is wrong concerning the significant digits?
A.
Four significant digits in 2.1870 x 102
B.
Three significant digits in 1.03
C.
Four significant digits in 0.05000
D.
Three significant digits in 0.00405
E.
Five significant digits in 53.410
Question #3
Dalton proposed which of the following?
A.
laws of thermodynamics
B.
atomic theory
C.
none of the above
D.
all of the above
E.
all of the above
Question #4
How many square kilometers are equivalent to 28.5 cm2?
A.
2.85 × 10-9 km2
B.
285 km2
C.
2.85 × 10-6 km2
D.
2.85 × 10-4 km2
E.
None of these.
Question #5
A 20.0 mL sample of glycerol has a mass of 25.4 grams. What is the density of glycerol in ounces/quart? (1.00 ounce = 28.4 grams, and 1.00 liter = 1.06 quarts)
A.
42.2 oz/qt
B.
4.22 x 10-2 oz/qt
C.
47.4 oz/qt
D.
844 oz/qt
E.
26.2 oz/qt
Question #6
How many significant figures are in the number 0.01020?
A.
5
B.
4
C.
2
D.
6
E.
3
Question #7
`Chemical properties are:
A.
those that cause atoms and molecules to change.
B.
those that a substance displays without changing its composition.
C.
those that a substance displays only through changing its composition.
D.
identical for all solid matter.
E.
none of the above
Question #8
12.809 × 19.1 = ________
A.
8
B.
4
C.
3
D.
5
E.
none of the above
Question #9
A solid that does not have a long range repeating order is called ________.
A.
amorphous
B.
rigid
C.
crystalline
D.
fixed
E.
none of the above
Question #10
Small compressibility is a characteristic of which state of matter?
A.
solid.
B.
more than one response is correct.
C.
gas.
Question #11
Oxygen is an example of:
A.
a molecule.
B.
an atom.
C.
a bond.
D.
a mixture.
Question #12
The correct prefix for the multiplier 1,000,000 is:
A.
mega
B.
milli
C.
nano
D.
micro
E.
none of the above
Question #13
Which state of matter retains its volume but adapts its shape to that of its container is:
A.
solid
B.
gas
C.
liquid
D.
none of these
Question #14
Which characteristic is necessary for success in understanding chemistry?
A.
curiosity.
B.
commitment.
C.
mathematical skills.
D.
all of these are keys to success.
E.
asking questions.
F.
practice.
Question #15
What are chemists most interested in?
A.
the study of life
B.
connections between properties and structures of substances
C.
the study of the human body and how it is affected
D.
the science of matter and how it responds to the environment
E.
all of the above are things that chemists are interested in
Question #16
How many significant figures will be in the final answer of this calculation? 13.96 - 4.9102 + 71.5 = ________
A.
5
B.
4
C.
8
D.
3
E.
none of the above
Question #17
Which of these would be a chemical property?
A.
the smell of apples
B.
the boiling point of water
C.
oxidation of copper
D.
boiling point of acetone
E.
none of the above
Question #18
Which of these would be a chemical property?
A.
the melting point of snow
B.
boiling point of acetone
C.
the color of orange juice
D.
corrosion of a metal
E.
none of the above
Question #19
Lead melts at 601.0 °C. What temperature is this in °F?
A.
302.1 °F
B.
364.7 °F
C.
1082 °F
D.
1050 °F
E.
1114 °F
Question #20
Which of these is a pure substance?
A.
water
B.
air
C.
sand
D.
chocolate chip cookie
E.
none of the above
Question #21
According to this week’s Lesson, which of the following topics did the Pew Research Center report discrepancies in opinion between the general public and scientists?
A.
Stem cells
B.
Human genomics
C.
Evolution
D.
In vitro fertilization
E.
Climate Change
Question #22
The scientific method has been applied to all of the following EXCEPT ___________.
A.
Apparition sightings
B.
Mass conservation
C.
Doppler effect
D.
Principles of inheritance
E.
Movements of Glaciers
Question #23
Which of the following is the second step in the scientific method?
A.
Prediction
B.
Data Analysis
C.
Hypothesis
D.
Observation
E.
Experiment
Question #24
Wear closed leather shoes to protect your feet while in the lab.
A.
TRUE
B.
FALSE
Question #25
Check glassware for stars and cracks.
A.
TRUE
B.
FALSE
Question #26
Remove rings and watches before working in the laboratory.
A.
FALSE
B.
TRUE
Question #27
Immediately wipe up any spills.
A.
TRUE
B.
FALSE
Question #28
Carefully scoop up mercury from a broken thermometer with a piece of paper.
A.
FALSE
B.
TRUE
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