Inorganic Chemistry
====================
Marks = 150
Organic 70 = Final 50 mid-term 20
Inorganic 80 = Final 50 mid-term 20 lab 10
==========================================
Curse Contents:* Introduction
* Atomic structure
* Chemical bonding
* periodic table
* Mole concept & Chemical formulas
* Solutions
* Thermo chemistry
1
1
2
1
2
2
2
==========================
Sites
www.chem1.com/chemed/genchem.shtml
www.mikeblaber.org/oldwine/chm1045/chm1045.htm
Google
General chemistry online !
Atomic Structure
======================
* Dalton's Atomic theory :>> Elements are composed of atoms .
>> Atoms of different elements .
======================
* Compounds :>> compounds are composed of molecules .
>> Molecules are composed of atoms .
Discovery of Electron
J.J Thompson's cathode ray experiment
Three tasks :1- Discovery of electrons .
2- Calculated mass to charge ratio for electrons .
3- Proposed the plum pudding model of the atom .
‫رسم كروكى للجهاز‬
Observations
1- the rays traveled towards to the positive electrod (anode) .
2- there is path could be "bent" by the influence of magnetic
or electrical fields .
3- A metal plate in the path of cathode rays .
4- The cathode rays produced by cathodes of different
materials appeared to have some properties .
Also J.J Thompson (1897) measured the charge to mass ratio
for a stream of electrons ( using a cathode ray tube
apparatus )
1.76 x 10*8 coulombs/grams
Thompson model of the atom (1900)
>> consists of sphere of positive charge within which was buried
negatively charged electron .
>> Also known as the " plum pudding " model of the atom .
* Discover of the nucles :Ernest Rutherford :Discovered alpha rays ,beta rays , gamma rays emitted by certain
substances called "radioactive source "
Consists of / Radioactive source – lead slit – electrically charged
plutes
B rays / G rays / a rays
Which B rays = Beta rays
G rays = Gamma rays
A rays = Alfa rays
The B-rays attracted to the anode
The a-rays attracted to the cathode
The G rays not attracted by the electric field
The Nuclear atom :>> Thomson's Atom
.diffuse mass and charge
>> Rutherford's Atom
.concentrated mass and positive charge at the nucleus
.electrons room empty space around the nucleus
The modern view of Atomic structure
Particle
Electron
Sympol
e-
Charge
-1
Proton
P+
+1
Neutron
N
0
Mass,kg
9.10953 x
10*-31
1.67265 x
10*-27
,,
Mass,daltans
0.000548
1.007276
,,
. The mass of an atom is extremely small . the units of mass used to
describe atomic particles is the atomic mass unit( or amu )
. An atomic mass unit is equal to 1.66054 x 10*-24 grams
. numbers of electrons = number of protons
. Ionic Charge = protons – electrons
 Atomic number ( Z )
 Mass number ( M )
<<<<
‫الكبير‬
H.W + Glossary