Indicate whether the following changes are physical or chemical lol,

Explain:

melting candle wax

burning candle wax

tearing paper

burning paper

dissolving NaCl

mixing NaCl and AgNO3

cutting Mg ribbon

adding HCl to Mg

grinding CuSO4 * 5H2O

heating CuSO4 * 5H2O

mixing Fe and S

heating Fe and S