accuracy and precision

Question 1

Rank the three volume measuring devices from most to least precise

Answer 1

1. pipet
2. graduated cylinder
3. buret
   The pipet is the most precise out of the three because each measurement is very close to the other. The buret’s values are the farthest apart from each other

Question 2

Which device is the most and least accurate?

Answer 2

The buret is the most accurate and the graduated cylinder is the least accurate.

Question 3

Does the ability or lack of ability to use each device influence the error in any way?

Answer 3

Yes, because things like faulty calibration, poorly managed devices, and the actual reading of the measurement by the person can add to the error

Question 4

The buret and pipet are volumetric glassware designed “to deliver” (TD) a specified volume of liquid. The graduate cylinder is designed “to contain” (TC) a specified volume. Does this difference in design affect the results?

Answer 4

Yes, because some devices are more precise or accurate than others. For example, the buret is more accurate than the graduated cylinder

Question 5

What type of volume measuring glassware is a volumetric flask?

Answer 5

A volumetric flask is a volume measuring glassware designed “to contain.”