Bismuth


Bismuth is a popular mineral composed of bismuth. [1]

Images of bismuth

Bismuth: Quick Facts and Characteristics

Some quick facts for Bismuth:
  • Transparency: Bismuth is opaque.
  • Crystallography: In terms of crystallography, bismuth is hexagonal.
  • Luster: In terms of luster, bismuth is metallic.
  • Streak: Bismuth streaks silver-white.
  • Specific Gravity: Bismuth's specific gravity ranges from 9.7 to 9.8.

Bismuth: Background and Summary

Bismuth is a chemical element with the symbol Bi and atomic number 83. It is a dense, silvery-white metal with a pinkish tint. Bismuth is a brittle metal and is easily crushed into a powder. It is a post-transition metal, meaning it is located in the lower right-hand corner of the periodic table. Bismuth is commonly found in nature as a sulfide or oxide mineral.

There are several ways to identify bismuth. One way is to observe its physical properties. Bismuth has a low melting point of 271.4°C, which means it can easily be melted with a lighter or match. It also has a high density of 9.78 g/cm³, making it heavier than most metals. Bismuth has a unique iridescent oxide layer that forms on its surface, giving it a rainbow-like appearance. Another way to identify bismuth is to perform a flame test. When bismuth is heated in a flame, it will produce a blue-green flame.

Bismuth has several important uses. It is used in the manufacture of cosmetics, alloys, and pharmaceuticals. Bismuth is also used in the production of low-melting alloys that are used in fire sprinkler systems, electrical fuses, and solders. Bismuth compounds are used in the treatment of stomach ulcers and other gastrointestinal disorders. Bismuth is also used in the production of pigments, such as bismuth yellow, which is used in paints and ceramics.

Bismuth: Table of Properties

Attribute Bismuth (src)
Transparency opaque
Chemical Formula Bi
Chemical Composition bismuth
Specific Gravity 9.7, 9.8
Streak silver-white
Crystallography hexagonal
Hydrous No
Colors common: gray
sometimes: white, red, yellow
Fracture 1: 1


Bismuth: FAQ

Q: Is bismuth toxic?
A: Bismuth is generally considered to be non-toxic. It is not classified as a hazardous substance by the US Occupational Safety and Health Administration (OSHA). However, some bismuth compounds can be toxic if ingested or inhaled.

Q: Is bismuth magnetic?
A: Bismuth is not magnetic. It is diamagnetic, meaning it is repelled by a magnetic field.

Q: Can bismuth be used in jewelry?
A: Yes, bismuth can be used in jewelry. It is often used as a substitute for lead in pewter jewelry. Bismuth jewelry can be polished to a high shine and has a unique iridescent appearance.

Sources

- "Bismuth." Encyclopædia Britannica. Encyclopædia Britannica, Inc., n.d. Web. 20 July 2021.
- "Bismuth." Los Alamos National Laboratory. Los Alamos National Security, LLC, n.d. Web. 20 July 2021.
- "Bismuth." USGS Mineral Resources Program. US Department of the Interior, n.d. Web. 20 July 2021.
- Bismuth: https://en.wikipedia.org/wiki/Bismuth

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