Matching



Match each item with the correct statement below. a.  absolute zero  e.  mass  b.  Kelvin temperature scale  f.  significant figure  c.  Celsius temperature
scale  g.  precision  d.  weight  h.  accuracy 


1.

closeness to true value


2.

narrowness of range of measurements


3.

known or estimated in a measurement


4.

the quantity of matter an object contains

Multiple Choice Identify the
choice that best completes the statement or answers the question.


5.

The diameter of a carbon atom is 0.000 000 000 154 m. What is this number
expressed in scientific notation?
a.  1.54 10^{} m  c.  1.54
10^{} m  b.  1.54 10^{}
m  d.  1.54
10^{} m 


6.

The expression of 5008 km in scientific notation is ____.
a.  5.008 10^{} km  c.  5.008
10^{} km  b.  50.08
10^{} km  d.  5.008 10^{}
km 


7.

What is the result of multiplying 2.5 10 ^{} by 3.5
10 ^{}?
a.  8.75 10^{}  c.  8.75 10^{}  b.  8.75 10^{}  d.  8.75 10^{} 


8.

What is the result of adding 2.5 10 ^{} and 3.5
10 ^{}?
a.  2.9 10^{}  c.  2.9 10^{}  b.  6.0 10^{}  d.  6.0 10^{} 


9.

The closeness of a measurement to its true value is a measure of its
____.
a.  precision  c.  reproducibility  b.  accuracy  d.  usefulness 


10.

Which of the following measurements contains two significant figures?
a.  0.004 00 L  c.  0.000 44 L  b.  0.004 04 L  d.  0.004 40 L 


11.

When a test instrument is calibrated, does its accuracy, precision, or
reliability improve?
a.  precision  c.  reliability  b.  accuracy  d.  all of the
above 


12.

Which of the following measurements (of different masses) is the most
accurate?
a.  3.1000 g  c.  3.122 22 g  b.  3.100 00 g  d.  3.000 000 g 


13.

Which group of measurements is the most precise? (Each group of measurements is
for a different object.)
a.  2 g, 3 g, 4 g  c.  2 g, 2.5 g, 3 g  b.  2.0 g, 3.0 g, 4.0 g  d.  1 g, 3 g, 5 g 


14.

Three different people weigh a standard mass of 2.00 g on the same balance. Each
person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance
that was used is ____.
a.  accurate  c.  accurate and precise  b.  precise  d.  neither accurate nor
precise 


15.

Which of the following measurements is expressed to three significant
figures?
a.  0.007 m  c.  7.30 10^{} km  b.  7077
mg  d.  0.070
mm 


16.

In the measurement 0.503 L, which digit is the estimated digit?
a.  5  b.  the 0 immediately to the left of the
3  c.  3  d.  the 0 to the left of the decimal
point 


17.

How many significant figures are in the measurement 0.003 4 kg?
a.  two  c.  five  b.  four  d.  This cannot be
determined. 


18.

How many significant figures are in the measurement 40,500 mg?


19.

How many significant figures are in the measurement 811.40 grams?


20.

Express the sum of 1111 km and 222 km using the correct number of significant
digits.
a.  1300 km  c.  1333 km  b.  1330 km  d.  1333.0 km 


21.

Express the sum of 7.68 m and 5.0 m using the correct number of significant
digits.
a.  12.68 m  c.  13 m  b.  12.7 m  d.  10 m 


22.

Express the product of 2.2 mm and 5.00 mm using the correct number of
significant digits.
a.  10 mm^{}  c.  11.0 mm^{}  b.  11 mm^{}  d.  11.00
mm^{} 


23.

What is the measurement 111.009 mm rounded off to four significant
digits?
a.  111 mm  c.  111.01 mm  b.  111.0 mm  d.  110 mm 


24.

What is the measurement 1042 L rounded off to two significant digits?
a.  1.0 10^{} L  c.  1050
L  b.  1040 L  d.  1.1
10^{} L 


25.

Express the product of 4.0 10 ^{} m and 8.1
10 ^{ }m using the correct number of significant digits.
a.  3 10^{}  c.  3.2 10^{}  b.  3.0 10^{}  d.  3.24 10^{} 


26.

When multiplying and dividing measured quantities, the number of significant
figures in the result should be equal to the number of significant figures in ____.
a.  all of the measurements  b.  the least and most precise
measurements  c.  the most precise measurement  d.  the least precise
measurement 


27.

What is the volume of a salt crystal measuring 2.44 10 ^{} m by 1.4 10 ^{} m by 8.4
10 ^{} m?
a.  2.9 10^{} m^{}  c.  2.9 10^{} m^{}  b.  2.9 10^{} m^{}  d.  2.9 10^{} m^{} 


28.

What quantity is represented by the metric system prefix deci?


29.

What is the metric system prefix for the quantity 0.000 001?
a.  centi  c.  kilo  b.  deci  d.  micro 


30.

The chief advantage of the metric system over other systems of measurement is
that it ____.
a.  has more units  c.  is in French  b.  is in multiples of 10  d.  is derived from nature
itself 
