Do Now When the bell rings In your seat: After the bell (2 min) In your seat: With pen/pencil With Notebook With Handout (from last class) Silent and ready for Do Now Homework on your desk Look over your test and reflect: What do you need to do to improve your score? Still needs Do Now

Period Average Score 1 65% 2 61% 4 75% 5 79% 6 67% 8 Class Averages

Gold Medalists Carlos Jimenez – 98% Period Top Score 1 Aaron Fosegan & Glenell Smith -95% 2 Lomar Dukes – 93% 4 Carlos Jimenez – 98% 5 Jaden Decker & Makayla Ivey – 95% 6 Moriah McKenzy – 95% 8 Colin Dell – 95% Gold Medalists

My Soapbox Key Takeaways: Keep up with make-up work…if you miss class, go to my website and put yourself to work Do the homework…not copy it, not ignore it, not half-#$^ it Pay attention in class…heads down or resting = not paying attention Make use of my tutoring and make-up schedule NEVER GIVE UP WHEN YOU DON’T GET IT Remember: Winning is hard work My Soapbox

Agenda  Do Now (5 min) Remediation Topic (10 min) Warm Up (5 min) Notes: Bohr Model (10 min) Lab: The Electromagnetic Spectrum (20 min) Independent Practice (20 min) Exit Slip (5 min) Closeout (2 min) 

Remediation Topic: Complete your quiz on lab equipment How? What? C – None H – Raise hand A – Identifying Lab Equipment M – None P – Answering questions on your quiz, head up, reading and thinking through each question Complete your quiz on lab equipment This is the diagram for question 4

The Bohr Model Objectives: Diagram Bohr’s model in terms of energy levels of electrons. Understand that when heated, electrons in metal ions absorb energy and move to higher energy levels then release energy as light when they return to their original level. Know the properties of a wave

Guiding Question How does a neon light work? What colors does it actually produce?

Warm Up (Honor’s & Pre-IB) How? What? (5 min) C – Whispers H – Raise hand A – Answer with group, M – None P – Record responses on reverse side of page. Who is known as the “Father of Modern Atomic Theory”? Draw the model of the atom that each of the scientists below theorized Dalton Thomson Rutherford

Warm Up How? What? (5 min) C – Level 1-2 H – Raise hand A – Answer with group, M – None P – Record responses on reverse side of page. Who is known as the “Father of Modern Atomic Theory”? Draw the diagrams and identify which scientist belongs to it Dalton Thomson Rutherford

Niels Bohr Danish scientist Theorized that electrons orbit around the nucleus and that light is emitted by electron movement between energy levels Student of Ernest Rutherford Rutherford was a student of JJ Thomson Niels Bohr

WARNING: The Bohr Model only works for Hydrogen Similar concept to the solar system The electrons orbit around the nucleus in different energy levels Accounts for the 3 subatomic particles Based on the line emission spectrum of excited atoms Wait, what? We’ll come back to this The Bohr Model WARNING: The Bohr Model only works for Hydrogen

Creating a Bohr Model 3 Steps Draw a circle and write the number of protons and neutrons  This is your nucleus Draw a circle around the nucleus  This is your n = 1 energy level. It holds up to 2 electrons. After you fill the 1st orbital, draw another circle  This is your n = 2 energy level. It holds up to 8 electrons Repeat as needed Never draw another circle without filling the previous orbital Creating a Bohr Model

3 Steps Draw a circle and write the number of protons and neutrons  This is your nucleus Draw a circle around the nucleus  This is your n = 1 energy level. It holds up to 2 electrons. After you fill the 1st orbital, draw another circle  This is your n = 2 energy level. It holds up to 8 electrons Repeat as needed Never draw another circle without filling the previous orbital You Do (5 min)

The Wave 3 key components Discuss with your group: Wavelength: The distance between crests of a wave Frequency: The number of crests of a wave that pass a given point in a given amount of time (directly related to energy) Amplitude: The height of a wave (we will not discuss this) Discuss with your group: What happens to frequency when wavelength is increased? If a wave has a high frequency, what can you predict about the wavelength? The Wave

Every element emits light of only certain wavelengths (colors) when their atoms are excited It is like the DNA of elements Line Emission Spectra

Hydrogen’s Emission Spectrum

How it Works 3 Phases: http://www.youtube.com/watch?v =8TJ2GlWSPxI Energy is absorbed by an electron The electron jumps to a higher energy level (further from nucleus) The electron loses the extra energy and falls to its original energy level  As it falls it gives off light (a photon) http://www.youtube.com/watch?v =8TJ2GlWSPxI How it Works

The Light We See Light moves like a wave The visible light we see is based on the electron arrangement of an atom Violet is the highest in frequency and energy Red is the lowest in frequency and energy The Light We See

Activity: Independent Practice How? What? C – None H – Raise hand A – Answering questions as a group to classify matter M – None P – Recoding answers on left page, head up, reading and thinking through all questions, discussing with group 10 minutes  Discuss for 5 minutes  Verify & Review

Exit Slip How? What? (5 min) C – No talking H – Raise hand A – Taking exit slip M – In seat P – Completing exit slip without notes and turning in If you finish early, summarize what you learned at the bottom of your notes OR answer today’s guiding question

Forgetting to stretch is a bear. Closing What are 3 key takeaways from today and yesterday? Complete the Be ready to discuss the Bohr Model of the atom next class

Do Now When the bell rings In your seat: After the bell (2 min) In your seat: With pen/pencil With Notebook With blank piece of notebook paper Silent and ready for Do Now Stretch is on your desk Respond to the following: “Don’t watch the clock; do what it does. Keep going.” -Sam Levenson Still needs Do Now

Agenda  Do Now (5 min) Warm Up (5 min) Finish notes: Bohr Model (10 min) Group Practice (10 min) Javelin Throw (20 min) Lab: The Electromagnetic Spectrum (20 min) Exit Slips (5 min) Test Corrections or Enrichment Closeout (2 min)

Warm Up How? What? (5 min) C – Whispers H – Raise hand A – Answer with group, M – None P – Record responses on reverse side of page. Draw the Bohr model for Neon How many P’s, N’s & E’s An ion occurs when an atom gains or loses electrons to form a bond. Draw the Bohr model for an atom of Cl that gains one electron when it bonds with Na. What is the resulting charge?

Finish Notes Key Vocabulary: Orbital – Energy levels outside of the nucleus Valence Electron – Electrons in the outer shell of an atom Photon – The light given off by an excited electron as it returns to its ground state Emission Spectrum – The wavelengths (colors) given off when an atom is excited Absorption Spectrum – The dark lines or patterns that occur when radiation passes through a substance

Activity: Javelin Throw How? What? C – Level 1-2, on-task discussion H – Raise hand A – Answering questions as a small group M – None P – Recoding answers on worksheet, head up, reading and thinking through all questions, discussing with group 20 minutes in small groups Use your notes and partner(s) to answer all questions

Activity: Independent Practice How? What? C – None H – Raise hand A – Answering questions as a group to classify matter M – None P – Recoding answers on left page, head up, reading and thinking through all questions, discussing with group 10 minutes  Discuss for 5 minutes  Verify & Review

Mini-Lab: Emission Spectra How? What? C – Level 1-2, on-task discussion H – Raise hand A – Answering questions as a small group M – To lab station, around lamp P – Recoding answers and observations on lab sheet, head up, reading and thinking through all questions, discussing with group Instructions are at your lab station Make sure you conduct ALL observations AND answer ALL questions at your lab station (For both Helium and Neon) Do NOT touch the lamps All group members must observe through the scope and color what you see

Exit Slip How? What? (5 min) C – No talking H – Raise hand A – Taking exit slip M – In seat P – Completing exit slip without notes and turning in If you finish early, summarize what you learned at the bottom of your notes OR answer today’s guiding question

Test Corrections or Enrichment Use your answer sheet, blank piece of notebook paper and the test Explain why your answer is wrong and why the correct answer is right and where you can find the material in your notes (the correct answer is already present) You will earn a ½ point for each correction you do. Choose from the following: Complete the half-life lab in the back Complete the guided practice, homework and/or independent practice from last class Complete the relative atomic mass worksheet

Forgetting to stretch is a bear. Closing What are 3 key takeaways from today and yesterday? Complete the guided practice from Bohr Model, if you did not already