from the chemical mentioned above, what are the properties of the first one?
Magnetic and mechanical properties.
Iron
Below its Curie point of 770 °C, α-iron changes from paramagnetic to ferromagnetic: the spins of the two unpaired electrons in each atom generally align with the spins of its neighbors, creating an overall magnetic field. This happens because the orbitals of those tw
what is the chemical composition of the earth Iron, oxygen, silicon, magnesium, sulphur, nickel, calcium and aluminum to name a few. how did this place get its name? Its developed, via Middle English, from an Old English noun. what is the climatic conditions on it? It can be subdivided into specific latitudinal belts of approximately homogeneous climate. what the construction of it from the inside? It is divided into layers by their chemical or physical (rheological) properties; crust, mantle, liquid outer core and solid inner core. how would you describe the exterior? Of the total surface area of Earth, about 70% s below sea level and covered by ocean water.
wiki:7685641
Iron [SEP] Magnetic properties
Thus a macroscopic piece of iron will have a nearly zero overall magnetic field. Application of an external magnetic field causes the domains that are magnetized in the same general direction to grow at the expense of adjacent ones that point in other directions, reinforcing the external field. This effect is exploited in devices that needs to channel magnetic fields, such as electrical transformers, magnetic recording heads, and electric motors. Impurities, lattice defects, or grain and particle boundaries can "pin" the domains in the new positions, so that the effect persists even after the external field is removed -- thus turning the iron object into a (permanent) magnet.