Write the word equations for the following chemical equations: 1) NaCl + KF -> KCl + NaF 2) 2Al + 3CaO -> Al2O3 + 3Ca 3) 2Na + Cl2 -> 2NaCl

Here are the word equations for the given chemical equations:

1. $\text{NaCl} + \text{KF} \rightarrow \text{KCl} + \text{NaF}$ Sodium chloride + Potassium fluoride $\rightarrow$ Potassium chloride + Sodium fluoride This answer is correct.

2. $2\text{Al} + 3\text{CaO} \rightarrow \text{Al}_2\text{O}_3 + 3\text{Ca}$ Aluminum + Calcium oxide $\rightarrow$ Aluminum oxide + Calcium The student's initial answer for CaO was "calcium", which is incorrect. CaO is Calcium oxide.

3. $2\text{Na} + \text{Cl}_2 \rightarrow 2\text{NaCl}$ Sodium + Chlorine $\rightarrow$ Sodium chloride This answer is correct.