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)

Question

Brandy

4 December, 08:01

+2

Answers (1)

Know the Answer?

Jeffery Joyce · Answer 1

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.

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)