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OpenStudy (anonymous):
Which statement describes a physical change? A. Calcium is added to acid and hydrogen gas is produced. B. Iron combines with oxygen to form rust. C. Lead is heated and becomes more viscous. D. Sodium metal reacts explosively with oxygen. ~~~Will Fan!!! <33
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OpenStudy (anonymous):
In a physical change no new substances are produced. Which choice would you pick?
OpenStudy (anonymous):
C because no new substance is being produced and there is no reaction happening with another substance
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