Question

Part A)

Why is it generally good practice to always use the most accurate and precise measurement instrument available?

Part B)

Will two students using the same piece of glassware have the exact same uncertainty in their measurement? Explain why or why not this might be the case.

Answer 1

a)

clearly, to reduce error in measurement, and therefore, error in final value/amount

If it is accurate --> will be near the actual value (average)

if it is precise --> will have very low variation/deviation

b)

Yes they have the SAME uncertainty, note that this might be subjective, since one student could use incorrectly.

If both are trained in the device, they should both report the SAME value

otherwise, they will not, and therefore, different error, but this is another type of error, (not from th edevice)