Q: Is chalk well jointed it can hold a large volume of ground water? ¶
A: Yes, and providing a natural reservoir that releases water slowly through dry seasons.
Q: Was chalk used to mark the boundary lines of the playing field or court? ¶
Q: Is chalk mined from chalk deposits both above ground and underground? ¶
Q: Is chalk traditionally a hard chalk used to make temporary markings on cloth? ¶
A: Yes, and mainly by tailors.
Q: Is chalk chalk prepared with a carefully controlled grain size? ¶
A: Yes, for very fine polishing of metals.
Q: Was chalk also traditionally used in recreation? ¶
Q: Was chalk cut into blocks and used as ashlar? ¶
A: Yes, or loose chalk was rammed into blocks and laid in mortar.
Q: Is chalk a source of quicklime by thermal decomposition? ¶
A: Yes, or slaked lime following quenching of quicklime with water.
Q: Is chalk used for raising pH in soils with high acidity? ¶
Q: Was chalk one of the earliest rocks made up of microscopic particles to be studied under the microscope? ¶
A: Yes, when it was found to be composed almost entirely of coccoliths.
Q: Is chalk the lowest cost to produce, and thus widely used in the developing world, calcium-based chalk can be made where the crumbling particles are larger and thus produce less dust, and is marketed as "dustless chalk"? ¶
A: Yes, Colored chalks, pastel chalks, and sidewalk chalk , used to draw on sidewalks, streets, and driveways, are primarily made out of gypsum.
Q: Is chalk calcium carbonate? ¶
A: Yes, and with minor amounts of silt and clay.