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Key Terms and Definitions in Chemical Analysis

Key Terms and Definitions in Chemical Analysis

Assessment

Flashcard

Chemistry

University

Practice Problem

Hard

Created by

Makhabbat Abzhanova

Used 1+ times

FREE Resource

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43 questions

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1.

FLASHCARD QUESTION

Front

Random Errors (Indeterminate Errors)

Back

Errors caused by uncontrollable variables, leading to random fluctuations in measurement results around the mean. Affects precision but not accuracy.

2.

FLASHCARD QUESTION

Front

Systematic Errors (Determinate Errors)

Back

Errors that consistently affect all measurements in the same way, impacting accuracy. Causes include instrumental errors, method errors, and personal errors.

3.

FLASHCARD QUESTION

Front

Gross Errors

Back

Rare errors caused by mistakes like misreading scales or incorrectly recording results, leading to outliers.

4.

FLASHCARD QUESTION

Front

Outliers

Back

Data points that differ significantly from other measurements in a dataset, often due to gross errors.

5.

FLASHCARD QUESTION

Front

Bias

Back

A measure of systematic error in analysis. Positive bias results are higher than the true value, while negative bias results are lower.

6.

FLASHCARD QUESTION

Front

Standard Reference Materials (SRMs)

Back

Certified materials with known analyte concentrations, used to verify the accuracy of an analysis.

7.

FLASHCARD QUESTION

Front

Calibration

Back

The process of determining the relationship between instrument response and analyte concentration, detecting and correcting systematic errors.

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