chalk

Image credit: James St. John

chalk

Take 2 minutes to review definition & features

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chalk

Image credit: James St. John

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CaCO3 reacts strongly to dilute, cold, HCl (acid)

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CaCO3 hardness about 3

Image credit: Scott Brande, CC4.0 License

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friable - crumbles, pulverizes, or easily scrapes off

Image credit: Scott Brande, CC4.0 License

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