Atom: is a practicle that defines a chemical element. It have a central nucleous and more than one electron. Each electron have a negative part,the nucleousthat is positive contains protons and neutrons.
Protons: Is the positive part of a atom, is alement of the periodic table,the proton wadiscovered by Ernest Rutheford in 1918. Is fundamental of all atomic nuclei.
Neutron: Is a elementary particle that no charge mass greater than a proton. Is a subatomic particle, is not electric charge. It was discogered in 1930 by Walther Bothe.
Electron: Is a negatived charged componet of a atom. Electron exist outside of a atom nucleus, each electron have a unit negative and a very small mass.electron is considered as the unit electrical charge. It is assigned negative polarity.
Molecule: Is the smallest physicala unit of a elemnt or compound and consist one or more atoms in an element of different atoms in a compound. Molecules can vary greatly in size and complexity. The element helium is a one-atom molecule. Some molecules consist of two atoms of the same element.
Compound: Is a substance that resultis from a combination of two or more differeent chemical elements. A compound differs from a mixture, in which bonding among the atoms of the constituent substances does not occur. In some situations
Magnetic field: is generated when electric charge carriers such as electron move through space or within an electrical conductor. A condition found in the region around a magnet or an electric current, characterized by the existence of a detectable magnetic force at every point in the region and by the existence of magnetic poles.
