Yes. Anything that involves burning something or using fire for that matter usually involves a chemical change.
Chemical. The easiest way to determine this is to try and get the process to reverse. You cannot take CO2 and H2O (the products of burning coal) and make them separate back into coal (C) and oxygen...
It converts Carbon to Carbon-dioxide. Carbon C + Oxygen O2 + energy > CO2 and also Carbon-monoxide CO (in-complete combustion or smoke).
Proteins denatures, chemical definitely. Physical change is like melting an ice cube.
No it doesn't because you can pick it up because everything that is a chemical change has to be a solid. does it make since?
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