Screen Savers Originally Were Developed to Prevent a Problem Called

question 137

Multiple Choice

Screen savers originally were developed to prevent a problem called ____, in which images could be permanently etched on a monitor's screen.

• A) thrashing
• B) paging
• C) ghosting
• D) hacking

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Definitions:

Hydrolysis Product

A compound resulting from the chemical breakdown of a substance by water.

Aldol Condensation

A chemical reaction that combines two aldehyde or ketone molecules to form a larger β-hydroxy aldehyde or β-hydroxy ketone, followed by dehydration to give a conjugated enone.

Base-Mediated Aldol Condensation

A reaction process that involves the use of a base to facilitate condensation between two carbonyl compounds, forming a β-hydroxy carbonyl compound or an α,β-unsaturated carbonyl compound.

Enolate

An anion formed by the deprotonation of an alpha-hydrogen of a carbonyl compound, important in many organic reactions.