PPT-The Atom Lab # 2 The Bohr Model

Whats Inside an Atom An atom is made up of a team of three players protons neutrons and electrons They each have a charge mass and a location Protons Neutrons collectively called nucleons. John Stachel. Center for Einstein Studies, Boston University. HQ-3, MPIWG, Berlin June 29,2020. The Young Niels Bohr. The Mature Niels Bohr. The Quantum of Action. "Anyone who is not dizzy after his first acquaintance with the quantum of action has not understood a word." . Fill out as much of RM. 13 . handout as possible. . USE A. PENCIL. Today’s Agenda. APE MAN. Update Foldable. Finish RM 13. Dry Erase Board Practice. DO NOW. . . Reminder:. Enter the classroom, begin the Do Now immediately, silently and independently.. (around 400 BCE). Democritus thought matter could be divided into. . smaller and smaller pieces until a . single indivisible . particle is reached. . He named this particle the . atom. He proposed that atoms are of different sizes, in constant motion, and separated by empty spaces.. Atomos: Not to Be Cut. The History of . the Atom and the Atomic . Theory. Atomic Models. This model of the atom may look familiar to you. This is . the Bohr model. . In this model, the nucleus is orbited by electrons, which are in different energy levels. . Chemistry. Learning Goals . To be able to . explain and draw atomic structure. Elements. Elements are the . building blocks. of all . matter. on Earth. Elements are made up of . atoms. Differences in . C. l. ). Draw the Bohr model. Draw the orbital Diagram. Write the longhand notation. Write the shorthand notation. Bellringer. Bellringer. Bohr Model. Longhand. 1s. 2. 2s. 2. 2p. 6. 3s. 2. 3p. 5. Contents:. Problems in nucleus land. Spectral lines and Rydberg’s formula. Photon wavelengths from transition energies. Electron in a box. Schr. ö. dinger. Limitations of Bohr’s model. .  .                               . What are the 3 major parts of an atom?. Proton . Neutron . Electron. Parts of an Atom. Another Model. SIMPLIFIED MODEL.. PROTON. Protons are positively charged particles found in the atomic nucleus. . Bohr’s model explained an unusual event. When electric current flows through a gaseous element, the gas . produces a glowing light, like a neon sign.. If this light is passed through a prism, a pattern of lines appears, with each line having a different color. The pattern depends on the element- neon has one pattern and helium another. What causes these lines and why are they always the same for a given element?. Standing waves. Quantum energy . of colors . Bohr Model . (particle picture). Assumptions. Nuclear model. Discrete electron orbits n = 1,2,3,... Light absorbed/emitted as quantum. . of energy when electron jumps orbit. Two regions. Nucleus . protons and neutrons. Electron . cloud. region where you might find an electron. Modern View. . . . . . . .. Dalton (1803). Thomson (1904). (positive and negative charges). Bell work for November 25, 2018. Directions-Many Scientific words, such as . bond. , also have everyday meanings. Use context clues to write your own definition for each meaning of the word . bond. . Quiz. Stability of atoms. Ultraviolet catastrophe. Bohr Model . bootcamp. PHYS274 Midterm I and related announcements. Midterm I on . Oct 16. th. , Monday. Professor . Pui. Lam will substitute for me, Oct 6-18, while I am away at KEK. The Complete Modern Atom. An atom is:. mostly empty space. . nucleus has . most of . mass. of an atom . Atom is divisible. Protons (+1 charge). Neutrons (no charge). Electrons (-1 charge). nucleus contains protons & neutrons.