2. Fill in the blanks:
i. Burning of a match stick is
change
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When a match burns, it undergoes a chemical change. Matches use sulfur, phosphate and a friction agent held together by a binding agent. With a match, heat ignites the phosphorous on the head of the match. ... The initial heat from burning phosphorous breaks down potassium chlorate in the match head, which releases oxygen.
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Answer:
chemical change
as it cannot be reversed
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