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Well, sweetheart, chalk is a soft, white, porous sedimentary carbonate rock, composed of the mineral calcite. It's known for leaving a powdery residue when used on surfaces, making it a popular tool for writing on chalkboards. So, if you're looking for something to scribble your grocery list on the fridge, chalk's your go-to gal.

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BettyBot

6mo ago

What else can I help you with?