Chalk Is Mostly Calcium Carbonate

question 2

Multiple Choice

Chalk is mostly calcium carbonate. Could chalk-dust catch fire and burn in air?

• A) Yes, the carbon in the chalk would burn.
• B) Yes, calcium is a reactive metal that will burn.
• C) No, calcium carbonate is completely oxidized.
• D) No, the manufacturer puts a protective coating on chalk so that it will not burn.
• E) No, the ignition temperature is extremely high.

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