Interview

Grade 12 Chemistry: Structures and Properties of Matter

7 views 0 purchase

Course
Chemistry

Institution
12th Grade

Grade 12 Chemistry Notes on the Structure and Properties of Matter. Includes topics varying from the current model of the atom, light, the photoelectric electric effect, the atomic line spectra, wave particle duality, heisenberg's uncertainty principle, quantum numbers, electron configuration, hund...

[Show more]

Preview 4 out of 39 pages

View example

Uploaded on July 8, 2023
Number of pages 39
Written in 2022/2023
Type Interview
Company Unknown
Person Unknown

grade 12
chemistry
unit 1
sph4u
sph4u1
history of the atom
atomic models
structures and properties of matter

Institution Secondary school
Education 12th Grade
Course Chemistry
School year 1

CA$11.19

Also available in package deal from CA$25.89

Added

Add to cart Add to wishlist

100% satisfaction guarantee
Immediately available after payment
Both online and in PDF
No strings attached

Also available in package deal (1)

Grade 12 Chemistry

CA$ 44.74 CA$ 25.89 4 items

1. Interview - Grade 12 chemistry: structures and properties of matter
2. Interview - Grade 12 chemistry: thermochemistry and reaction rates
3. Interview - Grade 12 chemistry: equilibrium
4. Interview - Grade 12 chemistry: organic chemistry
Show more

History of theAtomicMotel
3I
Describethe contributions
of scientists to the currentmodelof theatom
understand specifically the contributions of Bohr in connectionto an understanding oflight

scientist Experimentmotel limitations conclusions

JohnDalton Billiard BallModelcisos noindicationofany Matteris composed of
Hydrogencarbonoxygenphosphorus subatomic particle indestructibleindivisible

go t atoms
sulphur iron copperlead all matterismadeof
to I e r indivisible particlescalled

atoms
Atomsof anelementare
identical
Eachelementhasdifferent
atoms
Atoms ofdifferent elements
combine in constantratios

to form compounds

reactionsbut arenotcreated
nordestroyed
J J Thompson plumpuddingRaisinBun
mom Noindicationofexactly
Anelectrongoesfrom where the protonelectron
a cathode to an anode

Thebeam ofelectron
me
spacebetween two
oppositely chargedmetal
parallelplates
thetube is connected to an
electrical source

cathodeanode

o on

crescent
screen

tt
observation thecathoderay conclusion mattersis
A particles
produces a strongflorescence involved
or brightlightwhentheray

, strikes theseed
surface to the otherendof
thetube
observation thebeambent conclusion particleis
towards the positiveplate negativelycharted

Howdidherelateelectronstothe
atom
Heknewthatallmatterwas
madeupofatomsandthat
these tinyparticlesmusthave
comefromatoms
Hehadalsofoundthat

smallerthan thehydrogen
atomusingthe mass to
chargeratio

Rutherford Planetary Atomicnuclear t
Modelclan spex
mom

particles it wentthrough

iii
undeflected Fewscattered
mm itiii
no neutronscan't
acountformass
smallregionof theatom
the nucleus ispositively

particlesare positivelycharged

into andonly a fewfullydeflected
causingthemtocollapse

thenucleus
Howevermatterisverystable thenucleusandif thenucleus
aparticles
thisdoesnothappen deflectedpositively charged
couldnotdescribethe alpha particles it hasto

Mass oftheatomwasnot
equal to whatwasexpected mostparticles passedthrough
onedidnotaccountforneutrons soatomsaremostlyempty

T
e

somepositive a particles
deflected or bouncedback
Thus a nucleus is positive
protons andholdsmostof

, an atom'smass
Electrons areorbiting the
center of anatom farfrom
it at highspeed
Thecenterof theatom
holds the positiveparticles
theycannotbeuniformly
distributed
the positively chargedcenter
mustbeverysmall

Understand the connectionsbetween Bohr's model of theatom t his understanding of light
Bohr'sModel of theAtom
LIGHT behaves as a wave Behaves as a particle akaphoton
n im
Evidenced
by the PHOTOELECTRIC Effect
amountofe required toejecte
specific

Liz eyre ejects
off
jumps

mum
time

of wavesin unittimefrequency is neutral
negative
speed A x r
mis t
cos 3oxiosmis speedoflightin avacuum Iet Einstein
Photonstravelinpackagescalled quanta
Einsteinciaoscreatedthequantumtheoryoflightwhichstatesthat
Frequency is directly proportional to E electromagneticradiationtraveledas tinypacketsofenergycalledquanta
or photonsthatbehavedlikeparticlesratherthancontinuouswaves
oflightprovidesthefoundationforarevolute
Einstein'sworkonquanta

newidea our wholeuniverseis composedoftinydiscretechunksof
energyandmatter

Photoelectriceffects
earlytacos
whenlightwasshoneon ametalelectronswereemittedfromthatmeta
Lightwasknowntobea formofenergycapableofknockingloseanelec
froma metal
Therefore lightcouldsupplyenoughenergy to ejectanelectro

EinsteinEXPLAININGPLANCK'sTHEORY
Theorizedthat electromagneticradiation had a dualwaveparticle
nature behaveslikea waveandparticles
Thinkoflightasparticlesthateachcarryonequantumofenergypno
photons a particleof electromagneticradiationhavingzeromassan

carrying a quantumofenergy
E nr

, conclusions
Electromagnetic radiation is absorbedby matter onlyin whole
number of photons
inorderfor an e to be ejected the e mustbestruckby
a singlephotonwithminimum frequency
Lightnotons

son

sodium
metal

mayyank119001 emitsin
ePackages

My
S 4498 called
aquatnta
mitter m
emit
colora
oooo
IIe emitcolorB
Quantumtheory
Planck suggested that energyinsteadof being givenoff in continuous waves is instead givenoff in little packets of
energyor quanta
oThewordquantum meansa fixedamount thinkofit as flashes ofenergy
Alsocalled a photonwhendescribing a quantum oflight

Planck'sideawasthat onequantum
ofenergyconephotonswas related to its frequency by the equation Epnoton hr
The constant h planck'sconstant has a value of 6.6262103 s s e is theenergyand v is the frequencyoftheradia

Anobjectcanonlygainor loseenergy byabsorbing or emittingradiantenergy in
Planck'shypothesis Quanta
Energy ofradiation is proportional isproportional to frequency Ehr
Note
oLongwavelength small frequency
Shortwavelengthnighfrequency 38
MaxPlanckstudied emission oflightfrom hot objects
observed color of lightvaried with temperature
suggested the objectsdonot continuouslyemit E butemit e in smallspecific amounts
oLightis absorbedor emittedin a little packetor bundle called a quantum quanta plural
Quantum minimumamountof E that canbe lost or gainedby an atom
Energiesare quantized thinkstepsnotaramp

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller keyashokeen. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$11.19. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

70840 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling