Chemistry Monday, October 9th – Tuesday, October 10th,

2017

Do-Now: “Unit 1 Test Day Do-Now” 1.  Write down today’s FLT

Copy & Complete 2.  Write down one question you have about the

test (topic-wise or format-wise). 3.  The change from a solid to a ___ is called ___. 4.  When doing calculations, I need to always

include _____________. 5.  Dalton thought that atoms of the same element

were identical. Correct Dalton by completing the sentence frame: “While I agree that atoms of the same element _______________, I disagree that ________________ because atoms of the same element can _________________.

Take out your planner and ToC

Planner: • Get stamps through #10 •  Read Ch. 11

Table of Contents #2: 9.  Unit 1 Test Day Do-Now 10.  Basic Atomic Structure WS

FLT •  I will be able to demonstrate my

mastery of atomic chemistry by completing the Unit 1 Test

Standard HS-PS1-8:Developmodelstoillustratethechangesinthecomposi;onofthenucleusoftheatomandtheenergyreleasedduringtheprocessesoffission,fusion,andradioac;vedecay

CW

• CompletetheBasicAtomicStructureWSàyouwillneedtoknowtheatomictheoryfromCh.3tofollowalongwithCh.11(ModernAtomicTheory)

• YoumayalsoreadCh.11quietly

Chemistry Wednesday, October 11th – Thursday, October

12th, 2017

Do-Now: “Ch. 11 Demo” 1.  Write down today’s FLT 2.  Distinguish between subatomic particles and

nucleons 3.  What do protons and neutrons have in

common? 4.  What do electrons and protons have in

common? 5.  Use a pro-talk sentence frame to explain

something about subatomic particles. 6.  We will do our demo notes under this do-now

Take out your planner and ToC

Demo •  Ihaveaplasmaballandtwotypesoflights/bulbs.

•  Underneathyourdo-now…•  Useyourpro-talksentenceframe“Inmyopinion…because…”tomakeapredic?onaboutwhatyouTHINKwillhappen.

Demo •  Now,writedownthreeques?onsyouhaveaboutthedemo.

Demo •  Discussyourques?onswithyourgroup.•  Decideasagroupwhichques?onisthe“best”orthemostinteres?ng,andeveryoneshouldwriteitontheirpaper.

• Whatdoyouthinkwesaw?

Demo •  Now,wewillwatchavideo.•  Duringthevideo,writedownoneortwopiecesofevidencethatcanhelpyouexplainwhat’shappening.

Demo •  Usetheinforma?onfromthevideoandthedemotoansweryourques?on.

•  Useoneofthefollowingpro-talksentenceframes:– “FirstIconsidered…,then…____...Provesmyclaimbecause…”

– “Ifwelookatboth….and….Wecanseethat….”

– “Basedontheevidence,wecanconcludethat….”

Planner: •  Guided Reading WS •  Last day for Ch. 19 Quiz retakes is tomorrow •  Schedule Unit 1 Retakes à complete by the end

of next week. Email Fleming ASAP. Table of Contents #2:

11. Ch. 11 Inquiry Demo 12.  11.1 CN Part A 13. Ch. 11 Guided Reading WS

FLT •  I will be able to describe modern atomic

theory by completing Ch. 11 Notes A

Standard HS-PS1-8:Developmodelstoillustratethechangesinthecomposi;onofthenucleusoftheatomandtheenergyreleasedduringtheprocessesoffission,fusion,andradioac;vedecay

Notes Protocol • Title your notes & add assignment # • Complete Cornell-style • Copy down all bolded ideas • Noise level 0 • Raise hand to question/comment • Be prepared to pair-share-respond

Ch. 11 A: Bohr’s Atomic Model

Draw 5 circles on your notes

Recall •  Atomic models so far:

– Dalton – Thomson – Rutherford

Atomic Models: 1803-1911

Atomic Models: 1803-1911

Atomic Models: 1803-1911

Rutherford’s Atomic Model • WhatwasinadequateaboutRutherford’satomicmodel?

Rutherford’s Atomic Model •  Itcouldnotexplainthebehaviorofe-sorthechemicalproper?esofelements– Thebehaviorofelectronsisimportanttounderstandingthephysicalproper;esofelements,suchaswhyobjectschangecolorwhenheated.

Bohr Atomic Model

Electron Cloud/Quantum Model

The Bohr Model • WhatwasthenewproposalintheBohrmodeloftheatom?

The Bohr Model •  Bohrtriedtoexplainthebehaviorofelectrons

• Whydidn’telectronscrashintothenucleus?

The Bohr Model •  Ane-isfoundonlyinspecificcircularpaths(energylevels)aroundthenucleus.

The Bohr Model •  EnergyLevels=e-shavefixedenergiesforeachorbit

The Bohr Model •  Quantumofenergy=Theamountofenergyrequiredtomoveane-fromoneEleveltoanother

The Bohr Model •  e-sabsorbenergywhentheymovetoahigherElevel

The Bohr Model •  e-semitEwhentheymovetoalowerElevel

Bohr Model

The Bohr Model •  Liketherungsofthestrangeladder,theenergylevelsinanatomarenotequallyspaced.

•  Higherenergylevelsrequirelessenergyforane-tomoveup

Pair-Share-Respond 1. What are the four models of the atom that

we have learned about so far?

2. What was an issue with Rutherford’s model?

3. Describe Bohr’s model of the atom

4. When do electrons absorb energy, and when do they emit energy?

5. How are higher energy levels different than lower energy levels?

CW 1. Guided Reading WS (finish for HW)2.  Finished? Work on your stamps or begin

reading 11.2-11.33. Don’t forget –

–  Finish your Ch. 19 Quiz Retakes–  Schedule your Unit Test retake through email –  Make sure you have cleared your missing

work before you schedule

Chemistry Friday, October 13th – Monday, October 16th,

2017

Do-Now: “Ch. 11 Demo” 1. Write down today’s FLT 2.  List our three subatomic particles 3. What do protons and neutrons have in

common? 4. What do electrons and protons have in

common? 5.  Use a pro-talk sentence frame to explain

something about subatomic particles. Take out your planner and ToC

Demo •  Ihaveaplasmaballandtwotypesoflights/bulbs.

•  Underneathyourdo-now…•  Useyourpro-talksentenceframe“Inmyopinion…because…”tomakeapredic?onaboutwhatyouTHINKwillhappen.

Demo •  Now,writedownthreeques?onsyouhaveaboutthedemo.

Demo •  Discussyourques?onswithyourgroup.•  Decideasagroupwhichques?onisthe“best”orthemostinteres?ng,andeveryoneshouldwriteitontheirpaper.

• Whatdoyouthinkwesaw?

Demo •  Now,wewillwatchavideo.•  Duringthevideo,writedownoneortwopiecesofevidencethatcanhelpyouexplainwhat’shappening.

Demo •  Usetheinforma?onfromthevideoandthedemotoansweryourques?on.

•  Useoneofthefollowingpro-talksentenceframes:– “FirstIconsidered…,then…____...Provesmyclaimbecause…”

– “Ifwelookatboth….and….Wecanseethat….”

– “Basedontheevidence,wecanconcludethat….”

Announcements

• Unit1TestRetakes–1weekleW!– Clearmissingwork&schedulewithMs.FlemingASAP

• Nostudyguidesonretake

Planner: •  Study Ch. 11! Quiz next week J •  Recommendation: Use flashcards and

study notes and examples carefully Table of Contents #2:

14. Ch. 11 Notes B WS 15. Orbital WS (on separate paper)

FLT •  I will be able to describe the quantum

atomic model by completing Ch. 11 Notes B

Standard HS-PS1-1:Usetheperiodictableasamodeltopredicttherela;veproper;esofelementsbasedonthepa\ernsofelectronsintheoutermostenergylevelofatoms.

Notes Protocol • Add assignment # • Copy down all bolded ideas • Noise level 0 • Raise hand to question/comment • Be prepared to pair-share-respond

Ch. 11 B: Quantum Atomic Model

Atomic Models

Need for a New Model

Bohr Model •  ShortcomingsoftheBohrModel:

– e-scan’torbitthenucleus– Didnotexplaintheproper?esoflargeatomsàonlyexplainedthebehaviorofhydrogenatoms

The Quantum Mechanical Model •  Anewmodelneededtobedevelopedtoexplaintheforcesandbehaviorofatoms

Quantum Mechanical Model

Quantum Model

The Quantum Mechanical Model •  Thequantummechanicalmodelisbasedonquantumtheory

•  Scien;sts,suchasSchrödinger,notedthatma\ercanbehavelikewaves,anddevelopedcomplexmathema;calequa;onsthatcoulddescribethebehaviorofe-s

The Quantum Mechanical Model •  QuantumTheory:•  UncertaintyPrinciple=it’simpossibletoknowboththeexactposi?on&momentumofane-atthesame?me

The Quantum Mechanical Model •  QuantumMechanicalModel–Determinestheallowedenergiesane-canhaveandhowlikelyitistofindthee-invariousloca;onsaroundthenucleus

The Quantum Mechanical Model •  Inthequantummechanicalmodel,theprobabilityoffindinganelectronwithinacertainvolumeofspacesurroundingthenucleuscanberepresentedasafuzzycloud

•  Thecloudismoredensewheretheprobabilityoffindingtheelectronishigh.

The Quantum Mechanical Model •  Insteadoforbits,themodelusesorbitals•  AtomicOrbitals=regionsofspaceinwhichthereisahighprobabilityoffindingane-

•  Orbitalsaresome;mescallede-clouds

Atomic Orbital Shapes

Quantum Model

Pair-Share-Respond 1. What was wrong with Bohr’s atomic

model?

2.  State the uncertainty principle. 3. What does the quantum model use instead

of orbits?

4. Define the term “atomic orbital”

Quantum Numbers

Quantum Numbers •  Fournumbers,calledquantumnumbers,describethecharacteris;csofelectronsandtheirorbitals

Quantum Numbers •  n=PrincipalQuantumNumber•  l=AngularMomentumQuantumNumber•  ml=Magne?cQuantumNumber•  ms=SpinQuantumNumber

Quantum Numbers •  n=PrincipalQuantumNumber

– Thisisthesizeoftheorbitalandthespecificenergylevel

– n=1,2,3,…– Ex/n=2meanselectronsinthe2ndenergylevel/shell

– n=3means…?– n=5means…?

Quantum Numbers •  n=PrincipalQuantumNumber•  Thetotalnumberofe-sthatanenergylevelcanholdis2n2

•  Ex/n=2isthe2ndenergylevel.Itcanhold2(2)2electronsà8electronstotal

•  Howmanyelectronscanbeonthe3rdenergylevel?

Quantum Numbers •  l=AngularMomentumQuantumNumber

– Thisspecifiestheshapeoftheorbital:s,p,d,orf

– l =0,…,n-1– Ex/ifn=1,thenl=0àsorbitals– Ex/Ifn=3…? l=0 l=1 l=2 l=3

s p d f

Quantum Numbers •  l=AngularMomentumQuantumNumber

– Ifn=2,lcanbe0or1(upton-1)– Ifn=3,lcanbe0,1,or2– Ifn=4?

l=0 l=1 l=2 l=3s p d f

Quantum Numbers

Quantum Numbers •  Ex/Ifn=3andl=0,thenitisthe3ssubshell

– Thismeansthesorbitalonthe3rdenergylevel

•  Ex/Ifn=2andl=1,then•  …Itisthe2psubshell•  Ex/Ifn=4andl=2,then•  …Itisthe4dsubshell

Quantum Numbers •  ml =Magne;cQuantumNumber•  Describestheorienta?onoftheorbitals•  Maybe–l…,0,…+l•  Ex/n=2andl=1àsoml=-1,0,+1(3orbitals)

• Whatifn=3andl=2?

Quantum Numbers •  ml =Magne;cQuantumNumber•  Justremember:

– ssubshellhasoneorbitals– psubshellhasthreeorbitals– dsubshellhasfiveorbitals–  fsubshellhassevenorbitals

Quantum Numbers •  ms=SpinQuantumNumber

– Thisdescribesthedirec?onoftheelectron–eitherclockwiseorcounterclockwise

– Onlytwovalues:+1/2or-1/2– Therefore,thereareonlytwoe-sineachsubshellwithoppositespins

•  Note:Thefewerthequantumnumbers,thelessweknowabouttheelectrons.– Ex/Ifn=3,Icouldbetalkingabout2n2or18electronsonthe3rdenergylevel

•  TheMOREquantumnumberswehave,themoreweknowabouttheelectrons.– Ex/Ifn=3andl=2,Icouldbetalkingaboutanyelectronsinthedorbitals.Sincethereare5dorbitals,thismeansIcouldbetalkingabout10electrons.

– Ex/Ifn=3,l=2,andml=0,thenIamtalkingaboutonespecificdorbital,andtherefore2electrons.

– Ex/Ifn=3,l=2,ml=0,andms=+½,thenIamonlytalkingaboutoneelectron.

Atomic Orbitals •  Differentatomicorbitalsaredenotedbyle\ers.Thesorbitalsarespherical,andporbitalsaredumbbell-shaped.

Atomic Orbitals •  Fourofthefivedorbitalshavethesameshapebutdifferentorienta;onsinspace.

Atomic Orbitals •  Thenumbersandkindsofatomicorbitalsdependontheenergysublevel.

Pair-Share-Respond 1.  List the names and symbols of the four

quantum numbers

2. What are the possible ms values?3.  Explain the meaning of n =3 and l = 2

4.  If n = 3 and l = 2, How many total orbitals will there be?

5.  If n=3, How many total electrons can there be?

CW • Complete the Orbital WS questions

on a separate paper •  Finished?

– Read Ch. 11 – Complete ToC work – I HIGHLY recommend making flashcards

for this chapter – feel free to spend class time making some!