Atoms components, Rutherford and Bohr’s Atomic Models
Matter is composed of atoms , These atoms show the physical and chemical properties of the matter , By the end of the nineteenth century , Scientists had become sure that electrons are from...
Tagged: Energy levels
Heat content of a substance ( Molar enthalpy ) and Thermochemical Equation
Each substance stores an amount of energy inside it , This amount of energy called the internal energy , This amount of energy is the summation of three types of energy which are the...
The movement of electrons around the nucleus and the energy levels
The movement of electrons The electrons are negatively (- ve) charged particles, They revolve around the nucleus with very high speed, The electron has a negligible mass relative to that of the proton or...