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 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.
Lime and chalk.
Chalk
It can be used for the chalk bords .
First you can mix the salt and chalk together in water. Then using filtration, you can filter the chalk out. Lastly, using evaporation to get salt.
16th century
Chalk is a naturally occurring mineral. The "white cliffs of Dover" are made of chalk. It has been used for marking and painting by many ancient cultures. Today's 'chalk' that is found in classrooms is a clay composite. It is poured into molds.
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 would come first
Chalk has no contraceptive properties.
Chalk was not invented. It occurs naturally.
Chalk is used on the black board because chalk is easy to write with on a black board.
You can use it in homemade toothpaste recipes in place of baking soda. Also used in the construction trade when 'snapping' a chalk line on a board, etc.
chalk is to stop yourself from slipping or loosing grip
Lime and chalk.
ya i think so... type in "how to chalk your hair with sidewalk chalk" and the first website to pop up will probably be "the mane dish"... click that and TA DA