Calcium Carbonate Kalsium Karbonat

Formation of calcium oxide and calcium hydroxide
When calcium carbonate (limestone) is heated over high heat, it will decomposes into calcium oxide (quicklime) and releases carbon dioxide.
Calcium carbonate ------- Calcium oxide + Carbon dioxide.
Calcium oxide reacts with water to form calcium hydroxide (slaked lime)
Calcium oxide + Water ------ Calcium hydroxide(Slaked lime)

Slaked lime dissolve In water to form calcium hydroxide solution (lime water)
Solid calcium hydroxide + Water ------ Calcium hydroxide solution(Lime water).