2학기 기말고사 케미 정리

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Exothermice Endothermic reaction Rate of reastion

Rate of reaction chemical reactiong
Example of exothermic & endothermic reactions : ocEur whem diff ntere

atoms 충돌
Eolour change , femperature chaange gas
,
given OFf or moleEnlas Eollice
m

Activation energy : tne energy needed tostanrt a reaction

out
Exothermic reaction : A chemiEal reaction that transfers The rate at which the reaction happens depends on 4 things :
mm

heat energy from a EhemicaulreaEtion intofhe surroundings tTnetemperatureofthereactants

.
increasingthe
fermperature cool slower moving Barticles
과도한
.
an
excessm bf energy gives out heat emergy warm faster mowing Partiales
결합 농도
makimg bonds 2 Tneir Eoncentration for
.
liqmids pressure for gases
wwm mmm

reuctamts areat higmer energy lewel

mm
than the products Eoncemtration more acid partialesin same volume
mwa~
반응물 생성물 less pressure = Gageous BartiElas hava more spaEe

설 I ductrenersy
= 1 ess likely tocollide

increase Bress ure = Gaseous Particles have less space

Kkt애
… 시매 A
p
.
국 Tneir surfaEe
=

area
move

촉모비
likelytocollide

( livation - 4 whethar
. or mot a catanlyst
~m
is used

increases therateofa reaction , without being used UP

Im react
anc toforman intermediate
염구적인
Emdothermic reactiom : A Ehemicaulreactionfhat transfers later doesn hawe any
rem dew
permanent change
'

rm
t
~

heat energy from the surroundings to a chemical reaction

.

decreasing the femperature Acatalyst lowersthe

less energy than n dedae takesin heat astivatiom energy
~
breaking bomds 활성화
reactamts areatoa lower energy level tham the products
충돌
Reaction only

N
ocEurs if the collision has
energy equalor

소 다며
mr m

Products greater fman fne activation energy

~
of tne reaction

Head
정화활
on collision : more energetis

시에다 젬면춤돌 reaction fakes

…
plonce
" .". "
lancic ng blow : less energe icl -

비스드한마 충돌
mo reaction
방향
Examsle of exothermic The molecules must also colide in fhe Eorrect orientation
m넸

.
Make heat box A + BC ABtE
.
Self heatingcan ACB
+ λ No reastion occursiorientation isincorrect

온도 mm

가능설
Example of endothermic
Cold Pack
압력
.

Melting ice

농도

촉매

입자리크 줄이기
 2학기 기말고사 케미 정리 Qf
by .

효소
Enzymes : biological catalysts
mmwn
Metalsandalloys
help the reactions that ocEur in our
.

bodies etalM a
by comfrolling solid which Eonducts strong hard exs
, ,

the rate of reaction

발효 Properfies of metals :
strong ,
Hard High ,
melfing boiling point ,

가단성
.
seda fo nelp process called fermentatiom
a Ma1 leable Can hammer into shape Ductiles onductc heat
. ,
mmmmmmwn mmm ,
mm
면성
E Xlaby
"
73 foodsto pre digest the protaims
"
-

mmmm
conduct
mm
electricity . tstrousin Sonorous
wmm한
mm
사전 소화 전도 광택있는 울리는 소리

Periodic table when a metal is heated free electrons

inga kimelicenergy
=
they mowe faster and fransfer energy through the metal
Group t Tne alkali metals Insulatorsdon t have free electrons '
, socan t
'
dothis
m m mw

.
the most reactive metnls Pofassium isthe most ) CorK p ricsla rubber wood exs
, , ,

.
white in colour
형성
.
Soft and can be cut usinga Knife urep mefIsa tend to be soft and easily shaped Because of
격자 규칙적인 wa m
.

Keptunder Dil paraffingsincetheyarevery reactiver their lattice strusture and r ulareg

arrangement of
articlesp
wmm mmmmm
Tme layerscan slide ower each other
배열

rouPG 그 AlKaline earth metals

wnite in coour
Alloya mixture of fwo metals
.

or more
.

lessreactive than roupg I .

tomsa of ifferemtd ss
eiz

.
marder and Stronger than the pure metal
합금
Groupn The nalogens Iron is ~I 1 oyed with other me alst fo
produce different steel
Fluorine : gas
특성 구성
Steelshave different properties depending
mommm
,
on cirth com ositi
onp
mrwmmm

cnlorime : gasigreen yellowish E x ) mild tes k body Part

is easily pressedinto shape
.

Car

.
Bromine : liquid : reddish brown f0o l steelis hard and mot easily damaged dril bits
.
Iodine : solid : grey purple
fne most reation mon - metals Brass coppert zinc
.

Jye
w e Iler water Pipes '

Group 8 Tne noble gsesa Bronze Copper f fin

very unreactive elements Machine parfs Meclalaces
.

castin
.

, ,

solder Lead ttin

Periodic table Groaplv 8 The transifion mefals .
conmecting electrical wiring

Magnalium Aluminiumf coppert magnesiumm

.

Aircraft construction , bicycle Parts

Alnico (ferromagnetic Aluminiumfniakelf cob lta
발전기
.
Generators electric motors ,
mmmmmmm

Pewler tdea ffintsmallamount of antimory

P 잠식품
. 기 ates ornaments drinking mags
,
,
m~m

Stainlessstele Irontchromiumf mickel

날붙이 수술 도구
.
cuflery kifchen sinks surgical instruments
mw m
, .

mmm mw콜

Hardsteel Irontcarbon
면도날
.

Cutting fools , razor blades

~

Tungsten steel Iron tfungsten

Eages of migh sPeed cutting tools

 그학기 기말고사 케미 정리 빠&

ate , air ,
rw Pollution Reducing carbon dioxide in afmospher
lestfor water
.

planting more free

Co tba edustion in use offossil felu sfon transport

Paper changes from blue fo pink
.
1 chloride
국

제조업
when dipped in waterr
.
Mamufacture of electric Eaars
mmmm

CoPPer [ I > Su 네 fate Ehange from whife fo blue when Reducing Methane inafmospher
water isadded foit .
.
Reducingon household waste
Trapping landfill methane to generate trisityelec
.

use
m

and heat 매립과

:

Reducingsulfur dioxide in atmospher

Flue gasdasulfurisation using calcium oxide
휘발유
Purification of water Low Sulfur Petr이 diesel
~

서 .
screening Passing
: the water through Iarge filfers
fo large Solids ( plastiE bags botfles)
remowe Acid rain < usedca by nifrogen oxide & sulfur dioxide )
, .

고 sedimentation : Allowingthewatertosetfle for

sometime argel solidsfloat on the surface of water

and finy patir cles simlk to the bottomm

미세한
3 Filtration : passing water through fine sand filtersto
rmoam

remove tinysolid Particles

세균
4 cnlorinatiomiadditiom of chlorine to
.
water to killgerm
≈

관심사
Air Bollution is a globalconcernas gaases produced im one

만좋은
marwm

place Ean have adverse effects elsewhere

한

수름기
Green house gases water vapour Carbon dioxida , methame
, ,

마산화렬소
Air mixfure ofgases nitrousoxide sulfur hexnfluoride , CFES
,
화
지구 온난화
+ aliox engy too 4 icarbon
78 ni nfroge dioxidetrare gases Increase
im green house gases caused global warming
.

대기 m mw

OXygen isadded to the atmosphere by

mmum
photosynthesis
≈
.
.
Global warming isthe longferm inarease in the average

It is removed by respiration 호흡 광합성

rw 없
ftemperatureoffheearth' ssurface It caused climate change
≈
기후
Carbon dioxide isadded foatmosphere by respiration (Changes in weather Patferns ) .

It removed by Green house effect isthe matur@ l process im heat from

is
photosynthesis .

the sun is frapped

'
at the earth
'
s surface by green

Airlbollution : tne nfroduatiomiof marmful substances house gsase

오염물질
[pollutants) into the ai .
y