Chemistry Day 20. Monday, October 15 th Tuesday, October 16 th, 2018
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1 Chemistry Day 20 Monday, October 15 th Tuesday, October 16 th, 2018
2 Do-Now: Quantum Number WS 1. Take out your Ch. 11 B Notes (WS) 2. Make sure you picked up the worksheet from the front 3. Complete at least the first side of the worksheet independently or with one partner (if working quietly). Take out your planner and ToC
3 FLT I will be able to express the arrangements of e - s in atoms using orbital notation and electron configurations by completing Ch. 11 Notes C Standard HS-PS1-1: Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
4 Ch. 11: Electron Arrangement in Atoms
5 Recall
6 Quantum Model
7 Quantum Numbers
8 Orbitals
9 Electron Configurations
10 Arrangement of Electrons in Atoms Levels (n) Sublevels (l ) Orbitals (m l )
11 Energy Levels n = 1 n = 2 n = 3 n = 4
12 Arrangement of Electrons in Atoms Electron configuration = arrangement of e - s in atoms
13 Arrangement of Electrons in Atoms e - s assume an arrangement that gives the atom the lowest energy possible (more stable)
14 Arrangement of Electrons in Atoms What does this look like?
15 Electron Configurations 2p 4 Energy Level Number of electrons in the sublevel Sublevel 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 etc.
16 Arrangement of Electrons in Atoms What does this look like?
17 Three Principles
18 Aufbau Principle = e - s occupy the lowest E orbital available. Use the diagonal rule Three Principles
19 1 s Diagonal Rule 2 s 2p s 3p 3d s 4p 4d 4f s 5p 5d 5f 5g? s 6p 6d 6f 6g? 6h? 7 s 7p 7d 7f 7g? 7h? 7i?
20 Three Principles Pauli Exclusion Principle = No more than two e - s can occupy a single orbital We note this using arrows in opposite directions
21 Three Principles Hund s Rule = Fill in single e - s in separate equal-e orbitals before doubling up
22 In Summary: Our Rules
23 Rules 1) Determine the # of e - s by looking up Z (atomic number) Assume the atom is neutral unless stated otherwise (more on this later). Draw orbitals first to help you. Ex/ Nitrogen
24 Rules 2) Start filling orbitals in order of increasing E according to the Aufbau Principle. A single orbital can hold a max of 2 e - s Orbital Type Number of Orbitals s 1 p 3 d 5 f 7
25 Rules 3) Hund s Rule Applies: Draw all orbitals for each type, and fill in ONE e - in each orbital before doubling up.
26 Rules 4) Pauli Exclusion applies: Two e - s in the same orbital must have opposite spins
27 5) Write e - config Rules Make sure total # of e - s in your configuration matches the atomic number (if your atom is neutral)
28 Orbitals and the Periodic Table Orbitals grouped in s, p, d, and f orbitals s orbitals d orbitals p orbitals f orbitals
29
30 Examples
31 Write the orbital notation and e - Fluorine configuration for
32 Write the orbital notation and e - configuration for Magnesium
33
34 Write the orbital notation and e - Titanium configuration for
35 Write the orbital notation and e - Arsenic configuration for
36 Orbitals and the Periodic Table Orbitals grouped in s, p, d, and f orbitals s orbitals d orbitals p orbitals f orbitals
37 Shorthand Electron Notation
38
39 Shorthand Electron Notation We can abbreviate our long e- configurations by using our noble gases This is because our Noble Gases have complete full p orbitals Note: only use shorthand when asked to
40 Shorthand e - Notation 1. Find the closest noble gas to your atom with a smaller Z and put in [ ] 2. Fill orbitals from where the Noble Gas left off Ex/Na
41 Try: Ca Shorthand Notation
42 Chemistry Day 21 Wednesday, October 17 th Thursday, October 18 th, 2018
43 Do-Now: Ch. 11 Quiz Day Do-Now 1. Write down today s FLT 2. What are our four types of orbitals? 3. How many orientations does each type of orbital have? 4. How many electrons can one orbital hold? 5. How many TOTAL electrons can the 5 th energy level hold (n = 5) 6. How many TOTAL electrons can there be if n = 3 and l = 2? 7. What four quantum numbers describe an electron in the 4s orbital spinning clockwise? Take out your planner and ToC
44 FLT I will be able to demonstrate my understanding of modern atomic models and electron configurations by completing Ch. 11 Quiz Standard HS-PS1-1: Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
45 1. Review packet Complete together CW Make sure you can EXPLAIN your answers resist the urge to skip over problems you don t understand Ask questions 2. Study for quiz by reviewing your notes and worksheets We will take a KAHOOT before the quiz
46 Quiz/Test Protocol You may use your reference sheet Noise level 0 Eyes on own paper Mark answers clearly Do your best J Flip over when done
47 Chemistry Day 22 Friday, October 19 th Monday, October 22 nd, 2018
48 Do-Now: Lab Day Do-Now Have long hair? Tie your hair back 1. Write down today s FLT 2. Write down the orbital notation for Calcium 3. Write down the electron configuration for Calcium 4. Write down the shorthand configuration for Calcium 5. List the three principles/rules we need to follow in order to write out electron configurations. Take out your planner and ToC
49 FLT I will be able to investigate the relationship between electrons and energy by completing Quantum Lab Standard HS-PS1-1: Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.
50 Bunsen Burner Safety We will watch a video to review Bunsen Burner safety Failure to follow these safety rules will result in a zero and inability to participate in the lab
51 Let s Recap Hair must be tied back Goggles must be worn at all times Use gloves if handling the chemicals Wash hands thoroughly after lab
52 Photon Lab We will observe the properties of compounds by conducting a flame test. From our observations, we will determine the identity of the compound. The packet itself is worth 10 lab points. Be specific and detailed to get your points There will be a written report that will be submitted in addition to your packet worth 10 points as well
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