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Chemistry 9 Online
OpenStudy (anonymous):

Which of the following is a chemical change? Molten brass is poured into a mold to form a musical instrument. A magnet is used to take iron filings out of a mixture. An ice pack is shaken and squeezed and becomes cold. Moisture in the air forms beads of water on a cold windowpane

OpenStudy (asib1214):

any clue????????

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