Chapter-5
Valency and Writing Chemical Formulae : https://www.youtube.com/watch?v=NXfNrvbwXrY
Why do the Atoms bond to make things : https://www.youtube.com/watch?v=BpVGYGynwWI
DOT & CROSS Diagrams for IONIC and COVALENT BONDING : https://www.youtube.com/watch?v=r3ULKXEDSGE&t=3s
IONIC LATTICE : https://www.youtube.com/watch?v=R2fNctc3TYA&t=431s
Intermolecular forces (IGCSE) : https://www.youtube.com/watch?v=i9tYuRdIczg&t=159s
Metallic Bonding: https://www.youtube.com/watch?v=sYnhmQtlfEk&t=187s

Chapter-2
Kinetic theory: https://www.youtube.com/watch?v=wclY8F-UoTE
Change of states: https://www.youtube.com/watch?v=xYU7RSoOZ0U
Diffusion and Temperature: https://www.youtube.com/watch?v=Peg1yaB2bsk

Class-3
Ratherford Atomic Model:  Video link: https://www.youtube.com/watch?v=B-k_kMwB1zM
2Neil Boh’r Atomic Model: Video Link: https://www.youtube.com/watch?v=fm2C0ovz-3M