Chalk

Chalk is a soft, white or colored material commonly used for writing or drawing on surfaces like blackboards, sidewalks, and other rough textures. Made primarily from calcium carbonate or calcium sulfate, chalk is easy to apply and remove, making it ideal for educational, artistic, and recreational purposes. It comes in both dustless and traditional forms, and is widely used in classrooms, art studios, construction marking, and games like hopscotch. Chalk is valued for its visibility, ease of use, and temporary nature.