17:58

Atomic structure simplified

9:00

Sigma Notation grade 12 Exam Questions

17:27

functions | domain and range

7:27

Cluclus|Derivative polynomials/Differentiation

14:22

Ley de Gauss

42:31

Scientific Notation - Basic Introduction

13:15

Electron configuration explained

46:18

organic chemistry| bonding|hybridization| bond energy|hydrocarbons