Solemn Test Contents
8TH GRADE
Date : July 06th
Statement Of Inquiry
: Models help us to understand changes and interactions in the universe.
1.- Cycles of Matter
:
a. Carbon Cycle
b. Nitrogen Cycle
2.- Development of
the Atomic Theory
a. Democritus
b. J. Dalton
c. J.J Thomson
d. E. Rutherford
e. N. Bohr
f. E. Schrödinger
3.- Bohr Model : Basic Idea
a. Draw Bohr Diagrams
4.- The quantum mechanical
model : Basic Idea
a. Electron
configuration problems and types of orbitals (s, p , d, f)
5.- Valence of
Electron
a. Definition
b. Calculate number of valence
electrons
6.- Lewis Structure :
a. Draw Lewis structure diagram
7.- Chemical Bonding
b. Ions : Anion – Cation
c. Covalent Bonds
d. Ionic Bonds
