Alexius College Medical Technology Department Sample Processing Quiz

The preparation of a laboratory sample

Any loss or gain of water changes the chemical composition of solids

Determining the moisture content at the time of the analysis in a separate analytical procedure

<p>When the analyte is a gas dissolved in a liquid</p> Signup and view all the answers

<p>Sampling involves obtaining a small mass of a material whose composition accurately represents the bulk of the material being sampled. It is frequently the most difficult step in an analysis and the source of greatest error.</p> Signup and view all the answers

<p>A material is heterogeneous if its constituent parts can be distinguished visually or with the aid of a microscope.</p> Signup and view all the answers

<p>An assay is the process of determining how much of a given sample is the material indicated by its name.</p> Signup and view all the answers

<p>The level of accuracy required influences the choice of method in analytical chemistry.</p> Signup and view all the answers

<p>To preserve the integrity of the sample.</p> Signup and view all the answers

<p>Portions of a material of approximately the same size carried through an analytical procedure at the same time and in the same way; they improve result quality and reliability.</p> Signup and view all the answers

<p>They are usually averaged and subjected to various statistical tests for establishing reliability of results.</p> Signup and view all the answers

<p>To ensure the entire sample, including the analyte, is dissolved efficiently.</p> Signup and view all the answers