Atomic Math and Bohr Models

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Presentation transcript:

Atomic Math and Bohr Models 21 22 Atomic Structure and Bohr Models Atomic Structure and Bohr Models Sep 09, 2015 Sep 09, 2015 Application: Atomic Math and Bohr Models EQ: What is the Importance of Protons? Starter Connection What do you notice happens to the neutrons as the atoms gets larger? 2. What do you notice happens to the orbitals (levels) as the atom gets larger? Which of the pictures above is the correct model for Carbon and why? Practice: Exit: Explain how we determined the number of neutrons. How do you find the identity and the mass of an element that has 20 protons, 20 neutrons, and 20 electrons?

3. Atomic Math/Bohr Models Agenda 1. Starter 2. Practice 3. Atomic Math/Bohr Models 4. Exit 5. Homework Due 9/11

Table of Contents Date Lecture/ Activity/ Lab Page 8/28 Syllabus /Notebook Guidelines 1-2 8/28 Periodic Table/ Formula 3-4 8/28 Tools/ Measurement 5-6 8/28 Lab Report/ Investigations 7-8 8/31 Atomic History 9-10 9/1 Atomic Structure 11-12 9/2 Atomic Charges 13-14 9/3 Ape Man 15-16 9/4 Electron Placement 17-18 9/8 Valence Electrons 19-20 9/9 Atomic Math 21-22

Starter Which of the pictures above is the correct model for Carbon and why? J because Carbon contains 6 Protons, 6 Electrons, and 6 Neutrons

Practice How do you find the identity and the mass of an element that has 20 protons, 20 neutrons, and 20 electrons? To find the identity look at the number of protons. To find the mass, add the number to protons and neutrons together

Application: Atomic Structure And Bohr Models Need the number of Protons or electrons? USE THE ATOMIC NUMBER Need the number of Neutrons? USE THE ATOMIC MASS AND SUBTRACT THE ATOMIC NUMBER 1 H 1.008 Hydrogen

Atomic Structure (example) USE THE ATOMIC NUMBER number of Protons 1 number of Electrons 1 USE THE ATOMIC MASS AND SUBTRACT THE ATOMIC NUMBER 1- 1= 0 Neutrons number of Neutrons 0 1 H 1.008 Hydrogen

Atomic Structure Example Substance Symbol Atomic Number Mass Number Number of Protons Number of Neutrons Number of Electrons Helium He 2 4 Magnesium Mg 12 Zinc Zn 30 65 2 2 2 15.999 24 12 12 30 35 30 2 He 4.0026 Helium Pick 5 Elements off Atomic Math paper and draw Bohr Models for them on a separate sheet of paper

Bohr Model Atomic # 7 THINK APE A P E 7 7 7 NEUTRONS 14 - 7 7

Atomic Math and Bohr Models 21 22 Atomic Structure and Bohr Models Atomic Structure and Bohr Models Sep 09, 2015 Sep 09, 2015 Application: Atomic Math and Bohr Models EQ: What is the Importance of Protons? Starter Connection What do you notice happens to the neutrons as the atoms gets larger? 2. What do you notice happens to the orbitals (levels) as the atom gets larger? Which of the pictures above is the correct model for Carbon and why? Practice: Exit: Explain how we determined the number of neutrons. How do you find the identity and the mass of an element that has 20 protons, 20 neutrons, and 20 electrons?