Significant Figures Flashcards
0.0005 has five significant figures.
True or False?
False
What is the number of significant digits in the following measurement?
33.10
4
The mass of copper is 0.063546 kg and the density is 8.940 g/cm3. Calculate the volume using scientific figures.
7.108cm3
89015 has _____ significant digits.
5
0.000236 kg has _____ significant figures.
3
How many of the zeroes in 0.0079 are significant digits?
0
How many significant figures does the measurement 1.50 have?
3
Assume that you take a measurement with a metric ruler that is divided into individual millimeters. Which measurement has the correct number of significant figures?
- 0mm
- 00mm
21.0mm
Express the number 38000 in exponential notation to show four significant figures.
3.800 x 10^4
How many significant figures are present in 2.020×10−25 and 5.00×1027 respectively?
4 and 3
Which of the following is a correct rule for counting significant figures?
Leading zeroes are always significant.
Trailing zeroes are never significant.
Zeroes that show only where the decimal point falls are not significant.
Zeroes that show only where the decimal point falls are not significant.
How many significant figures are in 3.02×108?
3
When expressed as 7.5×104, only the significant figures of _____ are to be considered.
7.5
Round the number 6845 into three significant figures.
6850
The mass of an element is .007502×10−26 g. Find the number of significant figures when the mass is converted to mg. (Both mass values have same order of magnitude)
4
When measuring an object’s physical properties, how precise can one’s estimate be?
to the nearest tenth of a mark
How many significant figures are there in the measurement 347,000 g?
three
New carpet is being measured for a room that is 6.2 m by 8.9 m. On a measuring tape, what is the largest unit that could be used to correctly make these measurements?
decimeters
Round the number 1258 into three significant figures.
1260
1.05×104g has two significant figures.
True or False?
False
A zero that appears in front of all of the nonzero digits is right-end zero.
True or False?
False
0.48 has three significant figures.
True or False?
False
There are four significant numbers in 70.03.
True or False?
True
Considering 20.000 and 0.00002, 20.000 has more significant figures.
True or False?
True
Zeroes that occur between other nonzero digits (as in 602.7) are always considered to be significant digits.
True or False?
True
- has one significant figure.
True or False?
False
There are three significant figures in 1.23 g.
True or False?
True
In a properly reported measurement, one or more insignificant digits are reported.
True or False?
False
An insignificant zero functions as a placeholder for the decimal point.
True or False
True
