It is not chalk, it is phosphors.
yes but you have to soak the chalk more than the pastels
If you mean blackboard chalk, it is generally made of the mineral gypsum, which is calcium sulfate.
chalk
blowing wind, desert wind, heavy storm wind
did you chalk it up for her
It is not chalk, it is phosphors.
yes but you have to soak the chalk more than the pastels
because we can use it to write on chalk boards
Nature's chalk is limestone--hard. Blackboard chalk is soft--gypsum.
Chalk is a rock. Amelia Chamberlain
Chalk dissintegrates/dissolves
TAILORS; when tailors make your clothes,they use that chalk.(it might be erasable) PENCIL; you use it to write your assignments on the paper.
Chalk (use for writing on a greenboard in school) in Tagalog is called Tisa but commonly it is still called chalk.
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.
i think white chalk does last longer than coloured chalk because of chemicals. Not everything is coloured or just white but teachers tend to often use white chalk. They use it and use it but does it finish in one day no coloured chalk not much people use but it will change colour very quickly because it doesnt get used as much as white does.so shut up
Writing on blackboards