Simplified Chemistry

Alum

A colorless to white crystalline substance which occurs naturally as the mineral kalunite and...

مواضيع أخرى

عناصر الجدول الدوري

Actinium

A chemical element, Ac, atomic number 89, and atomic weight 227.0. Actinium was discovered...

مواضيع أخرى

مواضيع مميزة

Aluminium – Aluminum

Aluminum A metallic chemical element, symbol Al, atomic number 13, atomic weight 26.98154, in...

مواضيع أخرى