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General Chemistry Exam 1 2024/2025 Questions With Completed & Verified Solution.
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General Chemistry Exam 1 2024/2025 Questions With Completed & Verified Solution.
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General Chemistry Exam #1Generally observed behavior that can be formulated into a statement, sometimes mathematical
in nature, is called a(n)
1) observation.
2) measurement.
3) theory.
4) natural law.
5) experiment. - ANS 4) natural law
Which of the following is an example of a quantitative observation?
1) The piece of metal is longer than the piece of wood
2) Solution 1 is much darker than solution 2.
3) The liquid in beaker A is blue.
4) The temperature of the liquid is 60°C.
5) At least two of these (1-4) are quantitative observations. - ANS 4) The temperature of the
liquid is 60°C.
A solution is also called a
1) homogeneous mixture.
2) heterogeneous mixture.
3) pure mixture.
4) compound.
5) distilled mixture. - ANS 1) homogeneous mixture.
Solutions may be:
a) solids, liquids, or gases.
b) liquids only.
c) liquids or gases.
d) none of the above - ANS a) solids, liquids, or gases.
When nitric acid is added to a test tube containing copper, nitrogen dioxide gas is formed. This
is the result of:
a) an accident.
b) a chemical reaction.
c) a physical change.
d) an extensive property. - ANS b) a chemical reaction.
How many significant figures are there in the number 0.04560700?
1) 4
2) 5
3) 7
, 4) 8
5) 9 - ANS 3) 7
How many significant figures should be shown for the calculation? (1.25+0.45)/2.734
1
2
3
4
5 - ANS 3
Which represents the largest volume?
0.25 L
2.5 x 102 mL
2.5 x 106 uL
2.5 x 108 nL
2.5 x 1010 pL - ANS 2.5 x 106 uL
A sample of 120 milliliters of water equals:
2 fluid ounces.
4 fluid ounces.
6 fluid ounces.
8 fluid ounces. - ANS 4 fluid ounces.
A student measured the concentration of a solution three times, obtaining values of 0.010 M,
0.060 M, and 0.030 M. The average concentration was thus 0.033 M. The accepted value was
0.034 M. The student's data has:
good accuracy and good precision.
poor accuracy but good precision.
poor accuracy and poor precision.
good accuracy but poor precision. - ANS good accuracy but poor precision.
Estimate room temperature
(~72°F) in °C.
~ 15°C
~ 22°C
~ 27°C
~ 32°C
~ 37°C - ANS ~ 22°C
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