Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Atomic Models 8th Grade Dalton’s Model (1807) Thompson’s Model (1904) Positively charged material Electrons Thompson’s Model “Plum Pudding” model Electrons were just mixed into the positive material, the same way that chocolate chips are mixed into ice cream. The electrons mixed with the positive material, giving the atom a neutral charge. Rutherford’s Model (1908) ATO The atom is mostly empty space where the electrons travel. Small, dense positively charged nucleus Electrons travel around the nucleus the same way planets travel around the sun. Bohr’s Model (1913) Bohr’s Model Nucleus has both protons and neutrons Electrons travel in definite paths around the nucleus Electrons can jump from one level to another, similar to jumping from one rung on a ladder to another. Current Atomic Model Broglie & Schrodinger (1920) Electrons are found in electron clouds around the nucleus. Parts of an atom Electrons are negatively charged particles located in electron clouds around the nucleus. The size & number of electron clouds determine the size of the atom. The nucleus is the small, dense, positively charged center of the atom. Most of the atom’s mass is found here. The diameter of the nucleus is 1/100,000 the diameter of the atom.