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Which reaction results in only a physical change? A. 2H2O(l) + electricity ® 2H2(g) + O2(g) B. 2H2O2(l) ® 2H2O(l) + O2(g) C. 2H2(g) + O2(g) ® 2H2O(l) D. H2O(l) + heat ® H2O(g)
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Which reaction results in only a physical change?

A. 2H2O(l) + electricity ® 2H2(g) + O2(g)
B. 2H2O2(l) ® 2H2O(l) + O2(g)
C. 2H2(g) + O2(g) ® 2H2O(l)
D. H2O(l) + heat ® H2O(g)

User Francadaval
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D will because water just turns from liquid to a gas by adding heat. That is a physical change. The other equations are chemical changes.
User Alex Nauda
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