properties of earth materials

Classification of Magnetic Materials - On the basis of their magnetic properties different materials are classified as: Diamagnetic substance Paramagnetic substance Ferromagnetic substan..

Michael Faraday discovered that a specimen of bismuth was repelled by a strong magnet. Diamagnetism occurs in all materials. These materials are those in which individual atoms do not possess any net magnetic momen..

Properties of earth materials Objects in the sky Changes in earth and sk..

Properties of earth materials Objects in the sky Changes in earth and sk..

Matter and Materials - Matter exists in several phases. If we look at all objects around us, we perceive that some materials have a definite shape and occupy a definite amount of space or volume. We call these materials solids and we can name many objects that are soli..

Matter exists in several phases. If we look at all objects around us, we perceive that some materials have a definite shape and occupy a definite amount of space or volume. We call these materials solids and we can name many objects that are solids. We say that solids have a def..

(e.g., TiO 2 , NaCl, C 6 H 6 ) are weakly repelled by external magnetic fields. This property is shown only by those substances which contain fully-filled orbitals i.e., no unpaired electrons is presen..

(e.g., O 2 , Cu 2 + , Fe 3 + ) are attracted by a magnetic field but lose their magnetism in the absence of the magnetic field. This property is shown by those substances whose atoms, ions or molecules contain unpaired electron..

Silica (in the form of sand) Compounds of alkali metals, like Na 2 CO 3 , Na 2 SO 4 , NaNO 3 , K 2 CO 3 and KNO 3 . Compounds of alkaline earth metals, like CaCO 3 , CaO, BaCO 3 . (for glass with high refractive index) Oxides of heavy metals, like PbO, Pb 3 O 4 Calcium pho..

Chemical Properties of Alkaline Earth Metals - As alkaline Earth metals have low ionization energies and high electropositive character, they are very reactive and have a strong tendency to lose valence electrons, though less than alkali metals. The reactivity of these..