JCE Software Chemistry Comes Alive!
Glassware and Significant Figures

The accuracy of volume measurements made with beakers, graduated cylinders, and burets are compared.

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Narrative

This graduated cylinder measures volume more accurately than the beaker. The graduated cylinder can be read to the tenths place, giving a reading of 11.5 mL. The beaker's volume must be estimated at about 10 mL. Liquid is poured from the graduated cylinder into the beaker. The graduated cylinder now contains 10.3 mL of liquid. The beaker appears to contain about 11 mL Note that we estimate the last digit in each measurement. A buret measures volumes more accurately than a graduated cylinder. The graduated cylinder can be read to the tenths place, giving a reading of 10.3 mL. The buret reads to the hundredths place, giving a reading of 45.16 mL. When a few drops are delivered from the buret to the graduated cylinder, the buret reads 45.33 mL. The graduated cylinder reads 10.4 mL.