Multiple Choice
Which of the following measurements contains the correct number of significant figures?
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1. Intro to General Chemistry
Significant Figures
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Significant figures are important because they indicate:
A
the number of atoms in a molecule
B
the precision of a measured or calculated value
C
the type of chemical bond present
D
the accuracy of a chemical reaction
Verified step by step guidance1
Understand that significant figures (sig figs) are used in chemistry to express the precision of a measured or calculated value, not the number of atoms or the type of bond.
Recall that precision refers to how consistently a measurement can be repeated, which is reflected by the number of significant figures reported.
Recognize that accuracy, which is how close a measurement is to the true value, is different from precision and is not directly indicated by significant figures.
Note that significant figures do not provide information about the chemical nature of a substance, such as the type of bond or the number of atoms in a molecule.
Therefore, significant figures are important because they indicate the precision of a measured or calculated value.
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