CHEMISTRY GRADE 9 (2015 E.C.)
This is Grade 9 Chemistry tutorial prepared based on Ethiopian Curriculum.
How to Use the Online Platform
Chemistry Grade 9 Subject Introduction
The Atomic Theory
The Discovery of Electron
Quiz 1
Radioactivity and Discovery of Nucleus
Atomic Number and Mass Number
Quiz 2
Isotopes and Average Atomic Mass
Worked Example & Practice Exercise
Quiz 1
Atomic Models
Quiz 2
The Quantum Mechanical Model
Practice on Quantum Mechanical Model
Aufbau's Principle and Diagonal Rule
Aufbau's Principle and Diagonal Rule
Noble Gas as core Electron-Configuration
Revision on Unit 1 and Solved Problems
Review Questions (MCQ)
Solved Problems on How To Determine The Average Atomic mass of Isotopes
Practice Questions on Electron Configuration
Unit - 2 - Periodic Classification of Elements
Mendeleev's Periodic Law
The Modern Periodic Law
Periods
Groups
How to Identify Periods and Groups
Solved Problems on Identifying Groups and Periods from Electronic Configuration
Periodic Classification of Elements on the Periodic Table
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