Chemistry Practice Problems Physical & Chemical Changes Practice Problems Solution: Which of these changes are physical and which are ...

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Solution: Which of these changes are physical and which are chemical? Explain.(a) Plants make sugar from carbon dioxide and water.(b) Water vapor in the air forms frost.(c) A goldsmith melts a nugget of gold and pulls it into a wire.

Problem

Which of these changes are physical and which are chemical? Explain.

(a) Plants make sugar from carbon dioxide and water.

(b) Water vapor in the air forms frost.

(c) A goldsmith melts a nugget of gold and pulls it into a wire.

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