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Objective: I will be able to distinguish between an electron’s ground state and excited state.

Unit 4: A World of Particles—An Atom & Its Components. 4.8. Aim : What happens when an electron relocates?. AGENDA. Do Now. Introduction. Mini-Lesson. Summary. Work Period. Exit Slip. Objective: I will be able to distinguish between an electron’s ground state and excited state.

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Objective: I will be able to distinguish between an electron’s ground state and excited state.

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  1. Unit 4: A World of Particles—An Atom & Its Components 4.8 Aim: What happens when an electron relocates? AGENDA Do Now Introduction Mini-Lesson Summary Work Period Exit Slip Objective: I will be able to distinguish between an electron’s ground state and excited state. DO NOW: Complete Do Now slip You have 5 minutes

  2. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 AGENDA Introduction Mini-Lesson Summary Do Now Work Period Exit Slip Real-world connection X-ray Vocabulary Lewis Dot structure, valence electrons, electron configuration

  3. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 AGENDA Introduction Mini-Lesson Summary Do Now Work Period Exit Slip ANNOUNCEMENTS Atomic Timeline Project: Due Fri 2/28/14

  4. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 AGENDA Introduction Mini-Lesson Summary Do Now Work Period Exit Slip Do now

  5. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 AGENDA Introduction Mini-Lesson Summary Do Now Work Period Exit Slip Explain picture

  6. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  7. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  8. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  9. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 • Ground state vs. excited state • Ground state: Describes when electrons fill up levels closest to the nucleus+ has lowest energy • Excited state: Describes when electrons go to higher levels by absorbing energy so some are no • longer closest to nucleus Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  10. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 • Ground state vs. excited state • When an atom enters an excited state, the number of electrons STAYS THE SAME but the location of the electrons CHANGES. • In order for an electron to enter an excited state it must gain(absorb) energy • RESULT: Electron moves to a higher energy level. Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  11. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 • Explain Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  12. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Sample question Compared to a sodium atom in the ground state, a sodium atom in the excited state must have A.) a greater number of electrons B.) a smaller number of electrons C.) an electron with greater energy D.) an electron with less energy Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  13. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Sample question Which electron transition represents a gain of energy? A.) from 2nd to 3rd shell B.) from 2nd to 1st shell C.) from 3rd to 2nd shell D.) from 3rd to 1st shell Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  14. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Sample question 1) Which electron configuration represents the electrons of an atom in an excited state? (1) 2-4 (2) 2-6 (3) 2-7-2 (4) 2-8-2 Explain answer: Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  15. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Sample question 2) Which electron configuration represents an atom of chlorine in an excited state? (1) 2-8-7 (2) 2-8-8 (3) 2-8-6-1 (4) 2-8-7-1 Which can we eliminate? Why? Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  16. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Sample question 3) In comparison to an atom of F-19 in the ground state, an atom of C-12 in the ground state has (1) three fewer neutrons (2) three fewer electrons (3) three more neutrons (4) three more electrons Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  17. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Sample question Draw a venn diagram to compare the ground state and excited states of an atom: Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  18. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 •  Write Excited State Electron Configuration • EXAMPLE #1: Write the electron configuration of sulfur in the excited state. • Step 1: Write the electron configuration of element in the ground state (see reference table) • Step 2: Subtract one electron from an energy level and add it to the every level that follows it if it is not filled already. • NOTE: If last level is filled, then create a new level with that electron. Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  19. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8  Write Excited State Electron Configuration EXAMPLE #2: Write the electron configuration of neon in the excited state. Work Period Summary Mini-Lesson Exit Slip Do Now Introduction

  20. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Work period Complete pages 20-22 Work Period Exit Slip Introduction Do Now Mini-Lesson Summary

  21. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 HOMEWORK: Complete rest of 4.8 in the packet for homework Work Period Exit Slip Introduction Do Now Mini-Lesson Summary

  22. Unit 4: A World of Particles—An Atom & Its Components Aim: What happens when an electron relocates? 4.8 Exit Slip Make sure you get your trackers checked! Exit Slip Introduction Do Now Mini-Lesson Summary Work Period

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