Chapter 8:Chemical Equations and Reactions

A number written just to the left of a chemical formula is called a(n) . A chemical change in which energy is absorbed is called a(n) reaction. One in which energy is released is called a(n) reaction. ... Classify the reactions below as synthesis, decomposition, single replacement (cationic or anionic) or double replacement. H2 + O2 H2O H2O H2 ... ................
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