A) Yes, chalk powder is formed by breaking chalk into small pieces.
B) Yes, because formation of chalk powder is a chemical change.
C) No because no new substance is formed molecules of chalk and chalk powder are same.
D) Yes, because chalk is bigger in size than particles of chalk powder.
Correct Answer: C
Solution :
Chalk powder has same molecules as chalk and no new product is formed on breaking chalk into chalk powder.
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