Question | Answer |
Atom | the smallest component of an element |
Plum-pudding Model | The plum pudding model of the atom was proposed by J. J. Thomson |
Gold-Foil Experiment | Performed by Rutherford. Discovered that the Atom is mostly made of empty space and is positively charged |
Orbitals | Where Electrons are located |
Nucleus | Cotains the atoms Protons (+) and neutrons, mostly empty space. |
Proton | is one amu, positively charged |
Electron | Is Negatively charged, has a very small mass. |
Mass Number | The sum of the number of Protons and nuetrons of an atoms nucleus |
Atomic Number | representing the relative position of an element in the periodic table, is equal to the number of protons and electrons in the atom |
Ion | a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons |
Isotope | one of two or more atoms with the same atomic number but with different numbers of neutrons |
Atomic Mass | the mass of an atom of a chemical element expressed in atomic mass units |
Valence Electrons | In chemistry, valence electrons are the outermost electrons of an atom, |
Octet | when an orbital has 8 electrons in it, it is called dan octet |
Excited State | Excitation is an elevation in energy level above an arbitrary baseline energy state |
Ionization Energy | The amount of energy needed to remove an electron from a given kind of atom |
Electron Affinity | The Electron affinity of a molecule or atom is the energy change when an electron is added to the neutral species to form a negative ion. |
Electronegativity | the tendency of an atom or radical to attract electrons in the formation of an ionic bond |