Gyanbikash

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Am beliebtesten

State Of Element

Speacial chemical reaction

Periodic Table

Percentage Bonding

Oxidation reduction

Mineral treasure-Fossil

Finding the place of atom on periodic table from electron distribution

Different useful things and washing soap

Concept of ph

Changing condenced ore on oxide

Structure of element

Nuclear model

Mineral treasures ( metal nonmetal)

Idea of mole and chemical counting

Idea of chemistry