0620 IGCSE
CHEMISTRY NOTES
CATTAYSTU D I E S
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,21 MEASUREMENTS : CATTAYSTU D I E S
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locating agents in a solvent
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CHEMISTRY NOTES
CATTAYSTU D I E S
,It STATES OF MATTER :
CATTAYSTU D I E S
I
DI.eisncrib?:ean:dc:omf*pa=.rethe=profp*erE-Desr
t:÷"""o#
ies-f.io ibewhattypeofeaonare
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fstatethe5changesofs.to# 0.000,0000 .
008 ④
tt|
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Definite volume Indefinite shape
• •
volume &
.
oxqmpgegged.takeshapeofthecontai.tl
compressed compressed
•
✓
°"""d°^""°f
|"""""""""""d|°"""""°""°"""d|""""""
*"""+°°""""
www.geg.gmpggyugq.ging.gg#0OO0Ome-tingi.0o&&f&g
Posi⇐
a) fixed container
b) container
stretchy
⑦ /
UD
box 00
00
>
Descn.be#wnianmotion- 00000
things
00000 freezing
00000 ⑧§@ ☐ go
aipfb I
"energyisabsorbedtooquick1yt#meHingdoesntoccuF physical
ST
Defsi Changes of state -
1 1
Descn.be#-heeffecto-moeuarf
mass is
" conserved reversible
Contraction -
AY
÷?I÷
Ttempt kinetic
energy tspeed O_O
→
ftp.sionsf
Holliston
:^*
TT
,+|
"
↳ Particles
because
in
they
liquids
are
and gases more
bombarded by other
randomly
↳ "
net movement of particles
CA
"
moving particles - evidence for kinetic from an area of higher
particle theory
concentration to an area of
* *
⇐ e.
•
µ," grains .name . www.n.nn.on.asar.su
←
graphite / toothpaste of their random movement
•
←
suspended
[
←
in water
← T molecular
_
mass
✗ rate of diffusion
-
?⃝
,21 MEASUREMENTS : CATTAYSTU D I E S
I
""""""""""""""
/
ÉÉ•÷÷÷É÷÷÷÷÷
""""""""""
( It
a) time
b)
temperature '
on"
① 6) C)
IES
.
i:/ T.ic.my#-j=- -
Mass :
Balance Volume :
cylinder
UD
pipette.ci/Iinder-
burette
measuring
-
ST
AY
TT
CA
, 2-2 PURITY : CATTAYSTU D I E S
I
"
""
" " " "" "" "" " " " " " " " "" " " " " " " " " "" " ""
" " "
I /
\
I
a)
chromatography
b) Rf value " "
solute pure sample substance that dissolves a solute
g. went
1 g- "
substance +nata ,.me,
give, spot
f-f
d)
"
locating agents in a solvent
ÑÉÑÑÉÑÑdÑÉÑÉ"
IES
" distance travelled by the solvent
-
Beaker
www.t
otacgam?|
①
murmur chromatography paper
what is the
blstationaryphrasel
stationary phase colourless components pencil
b) mobile phase / €- baseline
-sage- ex .
V.V lamps - solvent → ImobikphaI
UD
I
hefvaulaHfi± "
Binds with the components of the mixture and form coloured products
"
×amgenta|
IPuresubstan#
"
compound
"
a
single element or
1
ST
How will pure sample & Impurities will
many spots a exact
melting
-
:
]
?
chromatogram boiling points melting point
}
make on a
+ range of temp
("*"°tmtf
✗
boiling point will boil /melt
sample
c)
* "" "" +
"
a) melting point for foodstuff &
drugs
AY
b) boiling point
range of temps
f.Descn.be/-heimportanceofpun#-
for drugs and foodstuff
TT
CA
?⃝
