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Instructor Email: scotnjen1@msn.com  |  Instructor Name: Mr. Scott Welch


Chemistry Module 1: Measurement and Units
D E M O   M O D E


Multiple Choice
(Choose One)


(1) Which is heavier, a 0.3 g rock or a 30.0 mg rock?
0.3g
30.0 mg
Same weight

(2) The following numbers are the results of several measurements of a football field (which is supposed to be 100.00 yards long). Which of these three numbers represents the most precise measurement?
113.1 yards
1.0x102 yards
99.126 yards

(3) Which of the above three numbers represents the most accurate measurement?
113.1 yards
1.0x102 yards
99.126 yards

(4) If we observe a fishing bobber float on the surface of the water, what can we conclude about the density of the bobber compared to the density of the water?
it is less
it is more
it is the same

(5) How many cm are in 16.2 m?
1.62x102 cm
1.62x10 cm
1.62x103 cm

(6) If an object has a mass of 345.6 mg, what is its mass in grams?
0.3456 gr
3.456 gr
34.56 gr

(7) If a football field is 100.0 yards long, how many miles long is it?
0.5682 mi
0.05682 mi
0.005682 mi

(8) The density of gold is 19.3 grams per mL. A miner finds a gold-colored nugget whose volume is 34.2 mL and whose mass is 661 grams. Is it really a nugget of gold?
Yes
No
Impossible to determine

(9) A fisherman wants to determine the volume of his lead sinker. If lead's density is 11.4 grams per cc and the sinker has a mass of 0.123 kg, what is the volume of the sinker?
1.08 cc
108 cc
10.8 cc

(10) Convert the number 3478 to scientific notation.
34.78X103
3.478x103
3.478x102

(11) The mass of an object is measured on earth and also on the moon. How do the two measured masses compare?
Less on earth
Less on moon
Same

Matching
(Enter number of matching value on right)

Milli (1) 0.001
Centi ( 2) 1.000
Kilo ( 3) 0.01

Once you have answered all questions to the best of your ability, choose "Score Your Answers". NOTE: Once you choose this option, your quiz will be graded and your grade will be recorded. If you elect not to score your answers at this time, you will be presented with the material again, but your score will automatically be reduced by 10 percent.