Question

write various examples involving a chemical reaction resulting in a change of state

Answer 1

Here is your Answer.

Reaction of NaCl with silver nitrate. Here the change in colour and state i.e. formation of white ppt (silver chloride) is considered as characteristics of a chemical reaction.

Answer 2

✡2H2+O2➡2H2O
Gas+Gas➡ Liquid

✡CH4+2O2➡CO2+2H2O
Gas+Gas➡Gas+Liquid.

✡CaO+H2O➡Ca(OH)2
Solid+Liquid ➡Solid

✡CaCO3+CaO➡CO2
Solid+Solid➡Gas

✡CaCO3+2HCl➡CaCl2+CO2+H2O
Solid+Aqueous ➡ Aqueous+Gas+Liquid


HOPE IT HELPS !
PLS MARK BRAINLIEST !
DON'T FORGET TO FOLLOW !
☺