Everyone’s first encounter with chalk is in school. Everyone who is involved with chalk is actually 10-15 cm long in a cylindrical shape and solid form. The chalk comes into being with the loose connection of the limestone in powdered form.
It is very difficult to find a clear answer to the question of who invented the chalk. But the chalk is easily found in nature and is the most suitable tool that can be used to draw something to stone or other hard floors.
Tebşirin Yapısı h2>
Although it is not known who made the rod-shaped chalk, the method used in the construction of the chalk first used chalk; limestone was ground into powder. Chalk clay and color pigments in powder form were mixed to obtain chalk in the desired color. The clay here was working as a kind of binder. The damp chalks rolled into the paste were allowed to dry in order to become solid.
The use of chalk in the classroom took place in the 19th century.
In the early days, the color of choice for the board was black, but because of the lesser amount of green color, the blackboards were replaced by green
Different uses of chalk h2>
After the chalk is cleaned and purified, portlant is used as a disinfectant in cement making. The use of chalk has been increased by processing and turning it into powder. It is used as filler in many places such as powder chalk, ceramic, glass paste, various cosmetics, rubber, paper, marley, toothpaste.