Iron has been known since antiquity; therefore, it is unknown who first discovered the element. Artifacts of smelted iron have been found and dated to be from as early as 3000 B.C. The symbol of iron is Fe, and its atomic number is 26. Iron is classified as a metallic element.Continue Reading
In its pure form, iron exists as a silvery-white metal than can easily rust when exposed to oxygen. It has a boiling point of 5182 degrees Fahrenheit and a melting point of 2800 degrees Fahrenheit. Its atomic weight is 55.847.
Iron is found throughout the universe and is essential to many forms of life. In humans, iron is an important part of hemoglobin, which is in the red blood cells. People who have low quantities of iron in their blood are considered anemic and can experience fatigue.Learn more about Reference Books
The molar mass of the chemical element iron is 55.845 grams per mole. Iron is represented by the symbol Fe. It is designated with the atomic number 26 on the periodic table.Full Answer >
Iron, a metal, is the 26th element on the periodic table. Its atomic weight is 55.845, and it exists as a solid at room temperature. Iron melts at 2,800 degrees Fahrenheit and boils at 5,182 F. In its pure state, iron has a density of 7.874 grams per cubic centimeter.Full Answer >
The bimetallic strip on an iron serves as a thermostatic switch to stop electricity from flowing to the heating element once the appliance reaches the desired temperature. The differences in the coefficients of expansion for the two metals that form the strip cause it to curve as it heats, eventually to the point it pulls away from the electrical contact and breaks the circuit.Full Answer >
A waffle iron uses electric current to heat a resistive heating element, transferring that heat to molded iron plates that cook waffle batter between them. A built-in thermostat maintains the heat for the proper length of time to produce crisp waffles, and an adjustable setting allows the user to select a shorter or longer cook time to adjust the doneness of the final product.Full Answer >