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Analytical Chemistry: The branch of chemistry deals with the study of analytical methods for qualitative and quantitative analysis of chemical substances. It is the science of chemical characterization Qualitative Analysis: It deals with the...
The intermediate turbid liquid phase of some solids between the solid phase and clear liquid phase, showing some properties of liquids and some properties of solids is called liquid crystal. Discovery of Liquid crystals...
The temperature at which the vapour pressure of a liquid becomes equal to the atmospheric pressure or some other external pressure is called the boiling point of a liquid. Explanation The vapour pressure of...
Evaporation is a process of spontaneous change of a liquid into vapours. It is continuous at all temperatures. Explanation According to kinetic molecular theory, molecules of liquid possess kinetic energy. All the molecules do...
The electrostatic interaction between a strongly electronegative atom and a partially positively charged hydrogen atom is called hydrogen bonding. Two strong electronegative elements are mostly N, O, F, and rarely CI. Two molecules involved...
METALLIC SOLIDS The metal atoms in a metallic crystal are held together by a special type of bond called metallic bonds. Theories of Metallic Bonding To explain metallic banding, the following theories have been...
The crystalline solids in which neutral atoms are held together by covalent bonds are called covalent crystals. These are also known as atomic solids. The atoms may be of the same or different elements....
Crystal has been classified into four types on the basis of forces present between atoms, ions, or molecules in them. These forces are also called cohesive forces. These forces may be chemical bonds or...
In 1896, a German physicist. Eugen Goldstein discovered another type of ray called positive rays or canal ass in the gas discharge tube. Experiment Eugen Goldstein used a perforated cathode in the discharge tube....
1. Geometrical shape Crystalline solids have a definite, regular three-dimensional arrangement of particles. Each crystal has definite faces (sides) and definite angles (interfacial angles), between the faces. For a given crystal, the interfacial angles,...
