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Each element is pure, it has its ownunique type of atom, which isidentified by its atomic number.(1 – 118)Everything is made up from theseelements or combinations thereof
The smallest particle of an elementis an atom. The atom is the basic building blockof matter It usually has no electric charge orhas a neutral charge The atom is actually mostly emptyspace!
The atom consists of 3 subatomicparticles that differ in theirlocation, electrical charge andrelative mass.▪Proton▪ Neutron▪Electron
The Proton Found in the nucleus of the atom.The largest particle, almost equalin mass to the Neutron.It is a positively charged particle(P+)
The Neutron Also found in the nucleus.Almost equal in mass to theProton.It has no charge (N0) it is NEUTRAL
The Electron Found outside the nucleus in the”Electron Cloud” and also in theoutermost energy level “The Valence” Much smaller than the proton orneutron, having almost no mass. It is negatively charged (E-)
The outer energylevel electrons foreach type of atom.Number from 1 – 8. They create a typeof “shell” around theatom that allows foratomic bonding.
Isotopes Atoms of the same element can havedifferent numbers of neutrons; thedifferent possible versions of the atomof an element are called isotopes Written as a symbol and a number i.e.C 14 is an isotope of carbon calledCarbon 14
Ions▪Atoms which gain electrons will havea negative (-) charge and becomenegative ions.▪Atoms which lose electrons will havea positive (+) charge and becomepositive ions.