03:38
Chemistry Matter and Change
Write word equations for the following skeleton
equations.
$$\begin{array}{l}{\text { a. } \mathrm{Cu}(\mathrm{s})+\mathrm{O}_{2}(\mathrm{g}) \rightarrow \mathrm{CuO}(\mathrm{s})} \\ {\text { b. } \mathrm{K}(\mathrm{s})+\mathrm{H}_{2} \mathrm{O}(\mathrm{l}) \rightarrow \mathrm{KOH}(\mathrm{aq})+\mathrm{H}_{2}(\mathrm{g})} \\ {\text { c. } \mathrm{CaCl}_{2}(\mathrm{aq})+\mathrm{Na}_{2} \mathrm{SO}_{4}(\mathrm{aq}) \rightarrow \mathrm{CaSO}_{4}(\mathrm{s})+\mathrm{NaCl}(\mathrm{aq})}\end{array}$$