Chemistry movies you tube

To day I saw on beautiful movie. Basic Chemistry Concept I and II  Movie is produced by ThePenguinProf  and I am  giving link

https://www.youtube.com/watch?v=MYuh5yErdfA

First part is 18 minutes long and 13 minutes long.

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Compound formation

Electron moves out from an atom due to ionization potential. so atom become positively charged ions.
Electron is accepted by another atom so atom become negatively charged ions.
positively charged ions cation and negatively charged anion are come to close and compound is formed. This is electrovalent compound.