1 / 7

Do NOW: 1. Have your HW out on your desks 2. Answer the following questions in your Notes

Do NOW: 1. Have your HW out on your desks 2. Answer the following questions in your Notes. Complete the chart using your Periodic Table What two particles contribute to the atomic mass? Why? On the periodic table, what is a row called? Column?. BOHR MODEL. Review .

hyman
Download Presentation

Do NOW: 1. Have your HW out on your desks 2. Answer the following questions in your Notes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Do NOW: 1. Have your HW out on your desks2. Answer the following questions in your Notes • Complete the chart using your Periodic Table • What two particles contribute to the atomic mass? Why? • On the periodic table, what is a row called? Column?

  2. BOHR MODEL

  3. Review • The Bohr Model was the model of the atom created by NIELS BOHR in 1913. • He stated that there was the nucleus in the center of the atom and electrons orbited around the nucleuson set paths • These set paths were called energy levels • could occasionally jump up to a different energy level when the electron gained more energy.

  4. Introduction • We still use this model today to have a visual of how many protons, neutrons, and electrons are in each model and we call it the BOHR MODEL. • The Bohr model consists of the nucleus and then rings to designate energy levels. • Each energy level holds a certain amount of electrons. • Once the energy level is full, then you may move on to filling the next energy level. You cannot move on without an energy level being filled completely.

  5. Energy Levels • Firstenergy level holds up to 2 electrons • Secondenergy level holds up to 8 electrons • Thirdenergy level holds up to 8 electrons • Fourth energy level holds up to 32 electrons • The electrons in the outermost energy level are VALENCEELECTRONS.

  6. Example: Carbon 1. Use your periodic table to determine the number of protons, neutrons, electrons, and energy levels. 2. The ROW or PERIOD that the element is in will tell you how many energy levels to draw for your Bohr diagram. 3. Carbon is in the second period, so it has two energy levels.

  7. Example: Carbon • Carbon’s atomic number is 6. • We know that it has • 6 protons • 6 electrons • The first energy level holds 2 electrons, the other 4 are on the second energy level P 6 N 6 **NOTE: Electrons are drawn at four points around the circle (top, bottom, right, and left). Electrons are placed starting at the right location and moving clockwise around the orbit** The nucleus is written to include the number of PROTONS and NEUTRONS.

More Related