What are the properties of iron and what are the physical properties of iron

Hard, thermally conductive, is a conductor and is not easy to deform.

Iron is a chemical element whose chemical symbol is Fe and its atomic number is 26 and is the most commonly used metal. It is a type of transition metal. It is the second most abundant metallic element in the earth's crust.

China was the first country to discover and master ironmaking technology. In 1973, a Shang Dynasty iron-bladed bronze Yue was unearthed in Hebei Province, China, indicating that the Chinese working people knew iron as early as 3,300 years ago, were familiar with the forging properties of iron, identified the difference between iron and bronze in nature, and cast iron on the blade of copper weapons to strengthen the toughness of copper. Scientific appraisal has proved that the iron blade was forged from meteoric iron.

With the maturity of bronze smelting technology, conditions were gradually created for the development of iron smelting technology. Iron is also found in the human body.

Basic nature. The density of iron is grams of cubic centimeters.

Iron is active and a strong reducing agent, with valences of 0, +2, 3, and 6, and the most common valence states are +2 and +3. At room temperature, iron slowly displaces hydrogen from water, increasing the reaction rate above 500: Iron reacts with oxygen very hard in dry air, but it is prone to galvanic corrosion in humid air, and even faster in an acidic gas or halogen vapor atmosphere.

Iron can reduce ions such as gold, platinum, silver, mercury, copper, or tin from solution.

Physical Properties of Iron:

1. Appearance and shape: Pure iron is a metal crystal with a silver-white metallic luster, usually gray to gray-black high-purity iron wire color, amorphous fine particles or powder.

2. Good ductility, electrical conductivity and thermal conductivity.

3. It has strong ferromagnetism and is a magnetic material.

4. The specific heat capacity is 460J (kg·).

5. The propagation rate of sound in iron: 5120m s.

6. Pure iron is soft, but if it is an alloy of iron and other metals or iron doped with impurities, the melting point usually decreases and the hardness increases.

7. Crystal structure: face-centered cubic and body-centered cube.

8. The relative atomic mass of iron is about 56, and the electronic configuration formula of the ground state atom is: 1s s p s p d64s2. (The bold part is the valence electron).

1. Physical properties of iron.

1. Pure iron has a silvery-white metallic luster, 2. It has good ductility, electrical and thermal conductivity.

3. The density is gram cm3, the melting point is 1535, and the boiling point is 2750 4.

1 Oxidation: Iron burns in oxygen 3Fe+2O2====Fe3O42 Reducibility: Iron reacts with acid Fe 2HCl FeCl2 H2 Sulfuric acid reacts with iron Fe H2SO4 FeSO4 H2 Iron reacts with copper sulfate Fe CuSO4 FeSO4 Cu

The properties of iron are as follows:

1) The physical properties of iron, pure iron has a silvery-white metallic luster; It has good ductility, electrical and thermal conductivity; The density is gram cm; The melting point is 1535 and the boiling point is 2750.

2) The chemical properties of iron, iron burns 3Fe + 2O2 = Fe3O42 in oxygen; Iron reacts with acid, hydrochloric acid reacts with iron Fe 2HCl FeCl2 H2 ; Reaction of sulfuric acid with ironFe H2SO4 FeSO4 H2 Contanling 3; Reaction of iron with copper sulfate Fe CuSO4 FeSO4 Saedin Cu.

Extended information: Iron is widely distributed in life, and the content of the earth's crust is second only to oxygen, silicon, and aluminum, ranking fourth in the earth's crust. Pure iron is a flexible and malleable silvery-white metal, which is used to make the iron core of generators and motors, and iron and its compounds are also used to make magnets, drugs, inks, pigments, abrasives, etc.

It is one of the so-called "ferrous metals" in the industry (the other two are chromium and manganese) (in fact, pure pig iron is silvery-white, and iron is called "ferrous metal" because the surface of iron is often covered with a protective film of black ferric tetroxide). In addition, the human body also contains iron, and +2-valent ferrous ions are an important component of hemoglobin and are used for oxygen transport. The main iron ores used are:

Fe2O3 (hematite), Fe3O4 (magnetite), FeCO3 (siderite), etc.

Question 1: What are the characteristics of iron Electrically conductive, malleable, and metallic luster; ferromagnetic; Chemical activity waves, easy to rust in the air!

It's not easy to hit by hand, if it helps, thank you!!

Question 2: What are the chemical properties of iron Iron has strong reducing property and is easy to lose 2 or 3 electrons in the reaction to form Fe2+ and Fe3+.

Question 3: What is the difference between the properties of iron and ferrous iron? Iron can be found in the form of elemental substances, but not ferrous and can only be found in the form of compounds. Ferrous iron only loses one less outermost electron than iron when it is reactive, so it is +2

Fe reacts with strong oxidants (nitric acid, excess chlorine water, etc.) to form +3-valent Fe

It reacts with weak oxidants (hydrochloric acid, sulfuric acid, etc.) to form +2-valent Fe

Its greatest use is for steelmaking; It is also used in large quantities to make cast iron and calcined iron. Iron and its compounds are also used as magnets, dyes (inks, cyanotype, rouge pigments) and abrasives (red iron powder). Reduced iron powder is used in large quantities in metallurgy.

Question 4: What are the characteristics of iron It is hard, has strong thermal conductivity, is a conductor, and is not easy to deform.

Question 5: What are the characteristics of iron Electrically conductive, malleable, metallic luster; ferromagnetic; Chemical activity waves, easy to rust in the air!

It's not easy to hit by hand, if it helps, thank you!!

According to the different carbon content, it is usually divided into two types: pig iron and cast iron.

Pig iron is an iron-carbon alloy with a carbon content greater than and more non-ferrous impurities, and its impurity elements are mainly a small amount of silicon, manganese, phosphorus, NCE0140K sulfur and other elements, pig iron Figure 451 iron is classified into an alloy, called ferrosilicon; The alloy of iron and manganese is called ferromanganese.

Alloy pig iron is generally used as a reducing agent in casting or steelmaking, or as an additive for alloying elements. Cast iron is an iron-carbon alloy with greater carbon content than but less impurity content, and carbon exists in the form of graphite and sometimes cementite in cast iron.

In addition to carbon, cast iron also contains 1% 3% silicon, as well as elements such as manganese, sulfur, phosphorus, etc., it contains more impurities such as silicon, manganese, sulfur, phosphorus and other impurities than carbon steel, and alloy cast iron also contains elements such as nickel, molybdenum, aluminum, copper, boron, vanadium, etc.

Carbon and silicon are the main elements that affect the microstructure and properties of cast iron, and the carbon content of commonly used cast iron is: Cast iron can be forged, metamorphic, spheroidized and other methods to change its internal structure, and improve and enhance its mechanical properties, can obtain more different types of cast iron, its varieties include white cast iron, gray cast iron, compacted graphite cast iron and alloy cast iron.