Question

What happens when plaster of Paris is mixed with water?

Answer 1

Hint: We have to remember that in chemistry, periodic tables play a vital role. In the periodic table there are totally \[118\] elements. In the periodic table there are totally \[18\] columns and \[7\] rows. The columns are called groups. Hence, \[18\] groups in the periodic table. The rows are called periods. Hence, totally \[7\] period in the table.

Complete answer:
As we know that calcium is one of the alkaline earth metals in the periodic table.
The chemical name of plaster of paris is calcium sulphate hydrate. The chemical formula of plaster of paris is \[CaS{O_4}.{H_2}O\].
When plaster of paris is mixed with water to form calcium sulphate dihydrate. The commercial is known as gypsum.
The chemical reaction plaster of paris is mixed with water is given below,
\[2CaS{O_4}.{H_2}O + 3{H_2}O \to 2CaS{O_4}.2{H_2}O\]
According to the above discussion, we conclude when plaster of paris is mixed with water to form calcium sulphate dihydrate. The commercial is known as gypsum.

Note:
We have to know that in the world there are a lot of elements in various forms. For study and developing purposes, classification happens. Periodic table used to study the elements in easy form. If one new element is discovered, it means, based on the physical and chemical properties we placed in the periodic table. In the modern periodic table, metallic atoms are placed on the left side of the table and non-metallic atoms are placed on the right side of the table. Metalloids and transition elements are placed in between metal and non-metal elements. Below the two rows are there. There are nothing but lanthanides and actinides. These are f-block elements.