Chalk, which is made of calcium carbonate, is commonly used for writing on chalkboards, sidewalks, and other surfaces. It is also used in various industries, such as construction, agriculture, and cosmetics.
Chalk has always been a useful compound, in its natural state, it was used during prehistoric times for cave paintings, and it is still used today.
Chalk
Chalk was not invented by anyone; it is a naturally occurring mineral; and has been used by people since the stone age. Nobody knows who first discovered and used it.
Yes, gypsum is used in chalk production as a main ingredient. When heated, gypsum undergoes a chemical process to become calcium sulfate hemihydrate, which is then used as the binding agent in chalk.
Chalk is a school supply that is made of limestone. Limestone is ground into a fine powder and used to make chalk sticks which are commonly used on chalkboards.
Because chalk shows up more you stupid jebend
They used the blood of there kills and they used rocks for there white (used as chalk)
Chalk has always been a useful compound, in its natural state, it was used during prehistoric times for cave paintings, and it is still used today.
well chalk is a white lime stone and limestone is sedimentry
A common Cretaceous stone found in some parts of the world is a limestone we know as chalk.
A skipping rope. Chalk and a stone (hopscotch)
Chalk
Chalk
Chalk
Chalk was not invented by anyone; it is a naturally occurring mineral; and has been used by people since the stone age. Nobody knows who first discovered and used it.
Chalk has no contraceptive properties.
chalk is produced by the shells of sea creatures lying on the sea bed and then the pressure of the water pushing the shells together until they form stone