Summary Doc Scientia Physical Sciences. Chemistry, ISBN: 9781920537159 Physical Sciences

, Line Revision
graph
:




Rules :




① 75 't .
rule

② Plot pencil
points in

3
IDV on x -
axis

↳
DV on Y -
axis


5
Footer include both variables




Proportionality
:




Direct = AT BT same factor

DV
= AaB =k
IDU


INVERSELY = A TBH same factor
= A d
'
1B
= K = Ax B



•
DV
directly
is proportional to the DV
inuersly Proportional
men
Straight line
line passes
•
through origin

, July Exam
questions
:
2020


.
i




Cams)
1) Table to show the relationship between Volume and
density
( ) of
gloms a mass
piece .




Vdoetunfezy volume Ccma)
"
Volume ( cm 3) Density (gloms)
I 16 16 I

2 8 16 O . 5


4 16 0.25
4
2 16 0.125
8
1 16 0.0625
16


There is proportional relationship There between
2) an inversely . is a
hyperbola

Volume and
density .




•
Graph shows the inverse
proportionality
in

I ot
density
and volume

=
¥
£
&



I
3
Volume
-



cm

, FOR M U L A WRITING :



1) Periodic table


2) Stock Notation


3) Prefixes

4) Compound ions




1 Periodic table :
valency
= Ionic bonding

sodium bromide Nat Br
-


ex ' :




= Na Br
.




Zt
Calcium chloride : Ca c,
-




= Ca ( 12
•




2 Stack notation : Transition metals


" -



Fe Br
iron ( Il) bromide :




Fe Brz .




z
+3 o
-




iron ( ill) oxide : Fe


Fez 03
•




bonding
3
PREFIXES : covalent



monoxide
dihydrogen
H2O •




Sulphur dichloride

SCI 2 .