Question

which of these is a chemical change? paper burning salt dissolving water boiling

Explanation:

A chemical change results in the formation of new substances. When paper burns, it reacts with oxygen to form ash, carbon - dioxide, and water vapor, which are new substances. Salt dissolving is a physical change as salt and water can be separated by evaporation. Water boiling is a physical change as it only changes the state from liquid to gas without forming new substances.

Answer:

paper burning