Search the Properties of Matter site Properties of Matter glossary Photos, illustrations and streaming media on the Properties of Matter site Properties of Matter table of contents Properties of Matter home page Link to NSRC home page

Properties of Matter Element Card 2, Lesson 21

Argon

Ar

Melting point

-189° C

Boiling point

-185.7° C

Density

0.0017 g/cm³

Appearance

 

Other physical properties

 

Chemical properties

Argon does not react with substances (except fluorine). It is odorless and nontoxic.

Compounds

 

Uses

Argon is used in lightbulbs, lasers, and arc welders. Crystals for making computer chips are grown in an inert, argon atmosphere.

Notes

Argon makes up about 1% of air. It is the third most common gas in air and is obtained by the distillation of air.

 

         

Scientist using an argon laser.

This scientist is performing research using an argon laser.

 

Information about the STC/MS curriculum Link to NSRC home page NSRC contact information NSRC copyright and permissions information Smithsonian Institution privacy policy Properties of Matter site map