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OpenStudy (anonymous):
Which of the following is a physical change? a.Copper reacts with a strong acid. b.Aluminium metal is pounded into thin sheets. c.Sodium metal explodes on contact with water. d.Iron is oxidized to iron oxide.
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OpenStudy (anonymous):
I think b is the only one. The others are chemical change.
OpenStudy (jmansedg):
do you go to k12
OpenStudy (jmansedg):
b
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