The method you will use to clean off chalk will depend on where the chalk is. Sidewalk chalk can be washed away from sidewalks with a hose.
If you erase the board, then use a wet paper towel to remove the rest of it, you'll have a sparkly board ;)
To remove air from chalk, you can use a vacuum chamber to create a low-pressure environment that allows air to be expelled from the porous structure of the chalk. Alternatively, immersing the chalk in a liquid, such as water or oil, can help displace the air trapped in its pores. Additionally, heating the chalk can help remove moisture and further drive out any air.
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.
near a chalk board
Chalk
The Luhya translation of the English words 'chalk board' is "lisisi lie ichoka".
When chalk is dissolved, the solid particles of chalk break down and disperse into the liquid it is dissolved in. This results in a homogeneous mixture where the chalk particles are spread out evenly throughout the liquid.
A compound word with chalk is chalkboard.
5x2x1.5
a chalk board
maybe it might be near the chalk on the 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.