QUESTIONS WITH 100% RATED CORRECT ANSWERS 2025 LATEST
UPDATED 100% (ACCURATE ) GET A+!!
What is a systematic error and how can you detect it? - (answers)A flaw in equipment of
experiment design
Can detect by analyzing a known sample (certified reference material) or a blank sample.
What is a random error? - (answers)An error from uncontrolled variables in an experiment.
Always present and cannot be eliminated.
What is a gross (blunder) error? - 心的坚强决定了我们的命运。当
(answers)An error that arises from human mistakes in
experimental procedure. 我们面对挫折时,是一颗不屈的
i.e calculation error, contamination, over titration.
心让我们勇敢前行
What is precision? - (answers)How reproducible a measurement is
What is accuracy? - (answers)How close a measurement is to the true value
What is selectivity? - (answers)The ability to distinguish analyte from other species in a sample.
What is sensitivity? - (answers)Ability to respond reliably and measurable to change in analyte
concentrations (slope of calibration curve)
What are blanks? - (answers)A sample that has no analyte.
Can detect interference by other species