Element Card 2 Experimenting with Mixtures, Compounds, and...
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EXPERIMENTING WITH MIXTURES, COMPOUNDS, AND ELEMENTS The STC Program™ © Smithsonian Institution Element Card 2 • Experimenting with Mixtures, Compounds, and Elements • Lesson 7 Argon THIS SCIENTIST IS PERFORMING RESEARCH USING AN ARGON LASER. PHOTO: Courtesy of the U.S. Department of Energy Argon makes up about 1% of air. It is the third most common gas in air and is obtained by the distillation of air. –189.2°C –185.7°C 0.0017 g/cm 3 Argon does not react with substances (except fluorine). It is odorless and nontoxic. Argon is used in lightbulbs, lasers, and arc welders. Crystals for making computer chips are grown in an inert, argon atmosphere. Melting Point Boiling Point Density Appearance Other Physical Properties Chemical Properties Compounds Uses Notes Follow these steps: 1. The gas inside the lightbulb in the lamp is argon. Describe it. 2. Plug in the lamp. Does the wire burn or glow? What does this suggest to you about argon gas?
Transcript of Element Card 2 Experimenting with Mixtures, Compounds, and...
EXPERIMENTING WITH MIXTURES, COMPOUNDS, AND ELEMENTSThe STC Program™© Smithsonian Institution
Element Card 2 • Experimenting with Mixtures, Compounds, and Elements • Lesson 7 Argon
THIS SCIENTIST IS PERFORMING RESEARCH USING AN ARGON LASER. PHOTO: Courtesy of the U.S. Department of Energy
Argon makes up about 1% of air. It is the third most common gas in air and is obtained by the distillation of air.
–189.2°C
–185.7°C
0.0017 g/cm3
Argon does not react with substances (except fluorine). It is odorless and nontoxic.
Argon is used in lightbulbs, lasers, and arc welders. Crystals for making computer chips are grown in an inert, argon atmosphere.
Melting Point
Boiling Point
Density
Appearance
Other Physical Properties
Chemical Properties
Compounds
Uses
Notes
Follow these steps:
1. The gas inside the lightbulb in the lamp is argon. Describe it.
2. Plug in the lamp. Does the wire burn or glow? What does this suggest to you about argon gas?
