Iron - Study Guide

Iron is a chemical element with the symbol Fe and atomic number 26. It is one of the most abundant elements on Earth and has been used by humans for thousands of years.

Properties of Iron

Atomic number: 26
Symbol: Fe
Atomic weight: 55.845
Physical state at room temperature: Solid
Color: Silvery-gray
Magnetic: Iron is magnetic at room temperature

Uses of Iron

Iron is used in a wide variety of applications, including:

Construction and engineering
Manufacturing of steel and other alloys
Tools and machinery
Transportation, such as in vehicles and infrastructure
In medicine as a dietary supplement

Iron in the Human Body

Iron is an essential mineral for the human body and is a key component of hemoglobin, the substance in red blood cells that carries oxygen from the lungs to the rest of the body.

Iron in Nature

Iron is found in the Earth's crust and core, and is also present in stars and the interstellar medium. It is often found in the form of iron ore, from which it is extracted and processed for various uses.

Interesting Facts about Iron

Iron is the sixth most common element in the universe by mass. It is also the most abundant element on Earth, forming much of Earth's outer and inner core.

Iron has been used by humans since ancient times, and its discovery and use played a crucial role in the development of human civilization.

Iron is also a vital nutrient for many plants and animals, and plays a key role in various biological processes.

Iron has four stable isotopes, which are used in various scientific and medical applications.

Iron is also commonly used as a catalyst in chemical reactions.

Iron has a high melting point of 1,538°C (2,800°F) and a boiling point of 2,862°C (5,184°F).

Iron is a ductile, malleable, and lustrous metal that is highly reactive and readily forms compounds with other elements.

Conclusion

Iron is a versatile and essential element with a wide range of uses and significance in both the natural world and human civilization.