CHEM 101 FINAL EXAM IVY TECH EXAM COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS
What is the definition of a scientific theory? - (answer) a 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? - (answer) scientific law
Which of the following is an example of a scientific law? - (answer) In a chemical reaction, matter is
neither created nor destroyed.
Which of the following would be considered a theory? - (answer) Helium balloons float because helium
is less dense than air.
The key to success in chemistry is: - (answer) all 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? - (answer) No, 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. - (answer) 3.80 x 104
The distance between the two hydrogen atoms in a molecule of water is 0.000000000172 m. Express this
distance in scientific notation. - (answer) 1.72 x 10-10 m
How many grams are in 1.48 x 107 μg? - (answer) 14.8
The correct decimal representation of 6.453 x 103 is: - (answer) 6,453
How many significant digits should be reported in the answer to the following question?
(4.3-3.7) x 12.3= - (answer) 1
, CHEM 101 FINAL EXAM IVY TECH EXAM COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS
The correct scientific notation for the number 0.00050210 is: - (answer) 5.0210 x 10-4
Which measurement below represents the heaviest mass? - (answer) 1 Mg
Determine the answer to the following equation with correct number of significant figures:
2.02+8.102-0.0297= - (answer) 10.09
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? -
(answer) 4.82 mL
When the value 4.449 is rounded to two significant figures, the number should be reported as: -
(answer) 4.4
The correct number of significant figures in the number 865,000 is: - (answer) ambiguous
How many inches are in 2.80 ft? - (answer) 33.6
Which of the following would NOT be considered a correct conversion factor? - (answer) 1 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? - (answer) The 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? - (answer) gas
A solution is an example of a (an): - (answer) homogeneous mixture
Which of the following is NOT an example of a physical property? - (answer) Water can form hydrogen
and oxygen under electrolysis conditions.
What is the definition of a scientific theory? - (answer) a 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? - (answer) scientific law
Which of the following is an example of a scientific law? - (answer) In a chemical reaction, matter is
neither created nor destroyed.
Which of the following would be considered a theory? - (answer) Helium balloons float because helium
is less dense than air.
The key to success in chemistry is: - (answer) all 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? - (answer) No, 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. - (answer) 3.80 x 104
The distance between the two hydrogen atoms in a molecule of water is 0.000000000172 m. Express this
distance in scientific notation. - (answer) 1.72 x 10-10 m
How many grams are in 1.48 x 107 μg? - (answer) 14.8
The correct decimal representation of 6.453 x 103 is: - (answer) 6,453
How many significant digits should be reported in the answer to the following question?
(4.3-3.7) x 12.3= - (answer) 1
, CHEM 101 FINAL EXAM IVY TECH EXAM COMPLETE 100 QUESTIONS AND CORRECT DETAILED ANSWERS
The correct scientific notation for the number 0.00050210 is: - (answer) 5.0210 x 10-4
Which measurement below represents the heaviest mass? - (answer) 1 Mg
Determine the answer to the following equation with correct number of significant figures:
2.02+8.102-0.0297= - (answer) 10.09
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? -
(answer) 4.82 mL
When the value 4.449 is rounded to two significant figures, the number should be reported as: -
(answer) 4.4
The correct number of significant figures in the number 865,000 is: - (answer) ambiguous
How many inches are in 2.80 ft? - (answer) 33.6
Which of the following would NOT be considered a correct conversion factor? - (answer) 1 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? - (answer) The 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? - (answer) gas
A solution is an example of a (an): - (answer) homogeneous mixture
Which of the following is NOT an example of a physical property? - (answer) Water can form hydrogen
and oxygen under electrolysis conditions.
