Tuesday, April 21, 2009

Estimating Errors in Chemistry

Copyright © 2003 Nigel Saunders N-ch1-24 Estimating Errors in Chemistry
Introduction
You must be able to estimate the size and importance of errors in practical work to gain full marks in your practical assessments. The table summarises what you need to do about errors in each Skill:
Skill
You must be able to:
Skill P
Planning
Organise the procedure to be followed, selecting appropriate techniques, reagents and apparatus, with due regard to precision of measurement and scale of working.
Skill I
Implementing
Make and record measurements to a degree of precision allowed by the apparatus used.
Skill A
Analysing
Identify sources of error, and recognise the limitations of experimental measurements.
Skill E
Evaluating
Assess the reliability of your data and the conclusions drawn from them, taking into account the errors in the data obtained.

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