Question

which chemical is present in enamel

Answer 1

Hey there!!!

CaC03 is that chemical which hardened chemical substance present in enamel
that gives hardness to the enamel

Hope this helps u !!

Answer 2

Enamel has highest percentage of minerals, the primary mineral is hydroxyapatite that is it is the crystalline form of calcium phosphate.
It is the hardest substance in the human body.

Hope my answer helps you.