CHEM 101 FINAL IVY TECH QUESTIONS
WITH CORRECT ANSWERS
What is the definition of a scientific theory? - CORRECT 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 predic
ts new ones? - CORRECT ANSWER -scientific law
Which of the following is an example of a scientific law? - CORRECT ANSWER -
In a chemical reaction, matter is neither created nor destroyed.
Which of the following would be considered a theory? - CORRECT ANSWER -
Helium balloons float because helium is less dense than air.
The key to success in chemistry is: - CORRECT 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 bl
ock float in water and why? - CORRECT ANSWER -
No, because the density of the block is 1.3 g/mLBwhich 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 th
e dimensions of 10.0 in x 4.00 in x 3.00 in. - CORRECT ANSWER -3.80 xB104
The distance between the two hydrogen atoms in a molecule of water is 0.000000000172 m. Ex
press this distance in scientific notation. - CORRECT ANSWER -1.72 x 10-10 m
How many grams are in 1.48 x 107 μg? - CORRECT ANSWER -14.8
, The correct decimal representation of 6.453 x 103 is: - CORRECT ANSWER -6,453
How many significant digits should be reported in the answer to the following question?
(4.3-3.7) x 12.3= - CORRECT ANSWER -1
The correct scientific notation for the number 0.00050210 is: - CORRECT ANSWER -5.0210 x 10-
4
Which measurement below represents the heaviest mass? - CORRECT ANSWER -1 Mg
Determine the answer to the following equation with correct number of significant figures:
2.02+8.102-0.0297= - CORRECT 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
? - CORRECT ANSWER -4.82 mL
When the value 4.449 is rounded to two significant figures, the number should be reported as: -
CORRECT ANSWER -4.4
The correct number of significant figuresBin the number 865,000 is: - CORRECT ANSWER -
ambiguous
How many inches are in 2.80 ft? - CORRECT ANSWER -33.6
Which of the following would NOT be considered a correct conversion factor? -
CORRECT ANSWER -1 pair of shoes = 1 shoe
WITH CORRECT ANSWERS
What is the definition of a scientific theory? - CORRECT 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 predic
ts new ones? - CORRECT ANSWER -scientific law
Which of the following is an example of a scientific law? - CORRECT ANSWER -
In a chemical reaction, matter is neither created nor destroyed.
Which of the following would be considered a theory? - CORRECT ANSWER -
Helium balloons float because helium is less dense than air.
The key to success in chemistry is: - CORRECT 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 bl
ock float in water and why? - CORRECT ANSWER -
No, because the density of the block is 1.3 g/mLBwhich 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 th
e dimensions of 10.0 in x 4.00 in x 3.00 in. - CORRECT ANSWER -3.80 xB104
The distance between the two hydrogen atoms in a molecule of water is 0.000000000172 m. Ex
press this distance in scientific notation. - CORRECT ANSWER -1.72 x 10-10 m
How many grams are in 1.48 x 107 μg? - CORRECT ANSWER -14.8
, The correct decimal representation of 6.453 x 103 is: - CORRECT ANSWER -6,453
How many significant digits should be reported in the answer to the following question?
(4.3-3.7) x 12.3= - CORRECT ANSWER -1
The correct scientific notation for the number 0.00050210 is: - CORRECT ANSWER -5.0210 x 10-
4
Which measurement below represents the heaviest mass? - CORRECT ANSWER -1 Mg
Determine the answer to the following equation with correct number of significant figures:
2.02+8.102-0.0297= - CORRECT 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
? - CORRECT ANSWER -4.82 mL
When the value 4.449 is rounded to two significant figures, the number should be reported as: -
CORRECT ANSWER -4.4
The correct number of significant figuresBin the number 865,000 is: - CORRECT ANSWER -
ambiguous
How many inches are in 2.80 ft? - CORRECT ANSWER -33.6
Which of the following would NOT be considered a correct conversion factor? -
CORRECT ANSWER -1 pair of shoes = 1 shoe
