Question | Answer |
Law of definite Proportions | Compound are made of the same elements in the Same properties regardless of size source of sample. |
Law of Conservation of Mass | Mass cannot be created or destroyed |
Law of multiple proportions | When two or more elements combine to form two compound the mass of one elements that combines with a given mass of the other is in the ration of small whole numbers |
Electron | A subatomic particle that has a negative electric charge |
Nucleus | Dense, central potion of the atom holds all the positive charge |
Proton | A subatomic particle with a positive charge, found in the nucleus of an atom. |
Neutron | A subatomic particle that his no charge and is found in the nucleus |
Atomic Number | the NUMBER OF PROTONS IN THE NUCLEUS OF AN ATOM, the atomic number is the same for all atoms of elements |
Mass number | The total number of protons and neutrons of the nucleus of an atom |
Isotope | Same number of protons, but different number of Neutrons |
Orbital | Regions around a nucleus that correspond to specific energy levels, electrons are likely to be found here. |
Electromagnetic Spectrum | Distance between two consecutive peaks to trough, light emissions |
Ground State | Lowest stare of energy |
Excited State | Highest state of energy |
Pauli Exclusion Principle | The principal that states that two particles of a certain class cannot be in the exact same energy state |
Electron Configuration | The atomic number represents the number of protons in an atom which also equals the number of electrons in an atom |
Aufbau Principle | Electrons fill orbits that have the lowest energy state |
Hund's Rule | Fill each orbital of an energy level with one electron before putting a second electron in the orbital. |
Atomic Mass | Mass of atom in measured in atomic Mass units (amu) |