a coastline made out of chalk! ta daa!
Yes, you do - so maybe hold your breath while you're doing it ;)
Some of the chalk is dissolved into the water and so when you write on a board the chalk can not easily be seen. The water then evaporates leaving only chalk behind therefore becoming visible.
YEP!
no,chalk is not magnetic because it is not made out of either iron or steel or otherwise it is not made out of meatal
its made of 8 vertices
near a chalk board
No, gypsum board is made from gypsum plaster and paper. Gypsum is a material very similar to school board chalk.
Chalk
The Luhya translation of the English words 'chalk board' is "lisisi lie ichoka".
Chalk is used on the black board because chalk is easy to write with on a black board.
Nature's chalk is limestone--hard. Blackboard chalk is soft--gypsum.
5x2x1.5
It would be an insulator- chalk board erasers normally consist of two parts, a wooden handle and a soft pad that wipes off the chalk from the board. Neither of these parts are conductors of electricity.
Chalk is Calcium Carbonate, aka CaCO3, so it's only one substance.
a chalk board
maybe it might be near the chalk on the board