CHEMISTRY 101 IVY TECH FINAL EXAM 2024
NEWEST ACTUAL EXAM COMPLETE 130
QUESTIONS WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS) /ALREADY GRADED A+
What is the definition of a scientific theory? - ANSWERa model that explains the
underlying reasons for observations and laws
What term best describes a brief statement that summarizes many past observations
and predicts new ones? - ANSWERscientific law
Which of the following is an example of a scientific law? - ANSWERIn a chemical
reaction, matter is neither created nor destroyed.
Which of the following would be considered a theory? - ANSWERHelium balloons float
because helium is less dense than air.
The key to success in chemistry is: - ANSWERall of the above
A plastic block has dimensions of 2.2 cm x 3.0 cm x 1.5 cm and a mass of 12.4 grams.
Will the block float in water and why? - ANSWERNo, because the density of the block is
1.3 g/mL which is greater than the density of water.
Given the density of Au is 19.3 g/cm3, determine the mass of gold (in grams) in an ingot
with the dimensions of 10.0 in x 4.00 in x 3.00 in. - ANSWER3.80 x 104
The distance between the two hydrogen atoms in a molecule of water is
0.000000000172 m. Express this distance in scientific notation. - ANSWER1.72 x 10-10
m
How many grams are in 1.48 x 107 μg? - ANSWER14.8
The correct decimal representation of 6.453 x 103 is: - ANSWER6,453
How many significant digits should be reported in the answer to the following question?
(4.3-3.7) x 12.3= - ANSWER1
The correct scientific notation for the number 0.00050210 is: - ANSWER5.0210 x 10-4
Which measurement below represents the heaviest mass? - ANSWER1 Mg
, Determine the answer to the following equation with correct number of significant
figures:
2.02+8.102-0.0297= - ANSWER10.09
A lead ball has a mass of 55.0 grams and a density of 11.4 g/cm3. What is the volume
of the ball? - ANSWER4.82 mL
When the value 4.449 is rounded to two significant figures, the number should be
reported as: - ANSWER4.4
The correct number of significant figures in the number 865,000 is: -
ANSWERambiguous
How many inches are in 2.80 ft? - ANSWER33.6
Which of the following would NOT be considered a correct conversion factor? -
ANSWER1 pair of shoes = 1 shoe
Suppose a boat engine leaks 938 mL of oil into a lake. The mass of this spilled oil is 823
g. The oil will not mix with the lake water. Which statement is true? - ANSWERThe oil
will float because its density of 0.877 g/mL is less than the density of water.
Which state of matter has indefinite shape and is compressible? - ANSWERgas
A solution is an example of a (an): - ANSWERhomogeneous mixture
Which of the following is NOT an example of a physical property? - ANSWERWater can
form hydrogen and oxygen under electrolysis conditions.
Which of the following is a homogeneous mixture? - ANSWERstainless steel
When methane is burned with oxygen the products are carbon dioxide and water. If you
produce 36 grams of water and 44 grams of carbon dioxide from 16 grams of methane,
how many grams of oxygen were needed for the reaction? - ANSWER64
Which of the following statements about matter is FALSE? - ANSWERMatter is smooth
and continuous.
Which of the following items is a chemical property? - ANSWERthe tarnishing of a
copper statue
Which state of matter has atomic spacing that is close together and definite shape? -
ANSWERsolid
All of the following can be considered physical properties EXCEPT: -
ANSWERflammability
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