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Chemical Analysis Terminology Quiz

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Questions and Answers

What is a reagent?

A compound that neutralizes acids
A substance that is used to clean laboratory equipment
A compound or mixture added to a system to cause a chemical reaction (correct)
A substance that is the result of a chemical reaction

What is an analyte?

A substance or sample being analyzed (correct)
A substance added to speed up a chemical reaction
A chemical compound that is highly unstable
A compound used to determine pH levels

Why is it important for a sample to be representative?

To increase the impurities in the sample
To speed up the laboratory operations
To ensure it has all the characteristics of the entire bulk system (correct)
To make the sample unique

What are the specifications for Analytical Reagent (AR) grade chemicals established by?

American Chemical Society (A) Signup and view all the answers

What are ultrapure chemicals primarily used for?

Specific procedures requiring extremely pure chemicals (B) Signup and view all the answers

What is the difference between distilled water and deionized water?

Distilled water is boiled and vaporized to remove impurities, while deionized water has ions removed. (D) Signup and view all the answers

Which type of water is acceptable for glassware washing but not for reagent preparation?

Type III water (A) Signup and view all the answers

What characterizes a dilute solution?

It has a relatively low solute concentration per volume of solvent. (C) Signup and view all the answers

What is the component of a solution that is present in the greatest amount?

Solvent (D) Signup and view all the answers

How does a saturated solution differ from a supersaturated solution?

A supersaturated solution has an even greater concentration of undissolved solute particles than a saturated solution. (C) Signup and view all the answers

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