TeXes Science Practice Test

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What chemical compound is known as "laughing gas"?

Carbon dioxide
Ozone
Nitrous oxide
Methane

The correct answer is: Nitrous oxide

Nitrous oxide is commonly referred to as "laughing gas" due to its euphoric effects when inhaled. It is a colorless, non-flammable gas with a slightly sweet smell and taste. This compound has applications in both medicine and food processing, where it is used as an anesthesia and in whipped cream dispensers, respectively. The name "laughing gas" stems from the fact that inhaling it can lead to laughter, feelings of excitement, and a state of relaxation, which makes it popular in certain recreational settings as well as in dental procedures to reduce anxiety and discomfort. The other compounds listed do not possess similar characteristics or effects.