Chalk
Form of rock
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Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Wikipedia
Chemical compound: calcium carbonate
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Download Planboard for iOS and Android. "Chalk.com is the most amazing tool for teachers, and should be the new standard for schools everywhere!" - Jen Mott.
May 24, 2024 · The meaning of CHALK is a soft white, gray, or buff limestone composed chiefly of the shells of foraminifers. How to use chalk in a ...
At Crayola, we think there's no better way to spend a sunny, warm day than outside creating colorful masterpieces on the sidewalk.
Jun 29, 2023 · Terminal string styling done right. Latest version: 5.3.0, last published: a year ago. Start using chalk in your project by running `npm i ...
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White Chalk Sticks are made to be used on children's chalkboards; Marks smooth and erases easily on blackboards or chalkboards; Great for the classroom; ...