Chapter 4, 5 and 6
Write the abbreviation for each of the following:
a. gram
b. degree Celsius
c. liter
d. pound
e. second - ANS-a. (g)
b. (* C)
c. (L)
d. (lb)
e. (s)
State the type of measurement in each of the following:
a. I put 12 L of gasoline in my gas tank.
b. My friend is 170 cm tall.
c. Earth is 385,000 km away from the Moon.
d. The horse won the race by 1.2 s. - ANS-a. volume
b. length
c. length
d. time
Identify each of the following numbers as measured or exact, and give the number of
significant figures (SFs) in each of the measured numbers.
a. 0.170 L
b. 4 knives
c. 6.3 x 10^-6
d. 1 m = 100 cm - ANS-a. measured; three SFs
b. exact
c. measured; 2 SFs
d. exact
How many significant figures are in each of the following?
a. 11.005 g
b. 0.00032 m
c. 36.000000 km
d. 1.80 x 10^4 kg - ANS-a. 5
b. 2
c. 2
, d. 3
Indicate if the zeros are significant in each of the following:
a. 0.0038 m
b. 5.04 cm
c. 800 L
d. 3.0 x 10^-3 kg - ANS-a. no
b. yes
c. yes
d. yes
Write each of the following in scientific notation with two significant figures:
a. 5000 L
b. 30,000 g
c. 100,000 m
d. 0.00025 cm - ANS-a. 5.0 x 10^3 L
b. 3.0 x 10^4 g
c. 1.0 x 10^5 m
d. 2.5 x 10^-4 cm
Identify the numbers in each of the following statements as measure or exact:
a. A patient has a mass of 67.5 kg.
b. A patient if given 2 tablets of medication. - ANS-a. measured
b. exact
Round off each of the following calculator answers to three significant figures:
a. 1.854 kg
b. 88.2038 L
c. 0.004738265 cm
d. 8807 m
e. 1.832 x 10^5 g - ANS-a. 1.85 kg
b. 88.2 L
c. 0.000474 cm
d. 8810
e. 1.83 x 10^5 g
Round off or add zeros to each of the following to three significant figures:
a. 56.855 m
b. 0.002282 g
c. 11527 s
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