chalk
Chalk is almost pure Calcium Carbonate. Chalk is a form of Calcium.
yes but you have to soak the chalk more than the pastels
The effect the chalk has on ants is that it can penetrate their skin and dehydrate them. Chalk can slowly kill an ant.
It is not chalk, it is phosphors.
No, chalk is not considered a type of renewable resource. Once it is used, its dust cannot be completely extracted to make more.
Use a magnet to remove the iron filings. Filter the remainder to separate the insoluble chalk powder from the water. Wash and dry the iron filings as they will be contaminated. Dry the chalk powder to remove traces of water.
chalk
colored chalk sidewalk chalk dustless chalk
rubber is harder than chalk !
There are a couple of things that make chalk hard. The calcium in chalk is said to make chalk hard.
A collective noun for chalk is a box of chalk.
Nature's chalk is limestone--hard. Blackboard chalk is soft--gypsum.
your an idiot, no a whitle chalk is not longer than aq blue chalk
chalk comes from chalk deposits the white cliffs of dover is one then the grind it into powder then they press it into molds of chalk then they sell it
its extracted
Seas with chalk in you fool