Final answer:
Burning a human hair wig results in combustion, where it turns into ash and smoke.
Step-by-step explanation:
When a human hair wig is burned, it undergoes a chemical reaction called combustion. Combustion is a rapid oxidation reaction that occurs when a substance reacts with oxygen and releases energy in the form of heat and light. In the case of burning a human hair wig, the wig will turn into ash and release smoke. This is because hair is primarily made up of a protein called keratin, which is composed of carbon, hydrogen, oxygen, nitrogen, and sulfur.