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: Atomic mass
The mole , Mass of substance & Avogadro’s number
The mole Mole is the unit of the quality of matter in the International System of Units ( SI ) and it is defined by different ways according to the mole and mass of...