Yes, when methanol is burned it undergoes a chemical change. The combustion of methanol produces carbon dioxide and water as products. The reaction is represented by the following equation:

CH3OH + O2 → CO2 + H2O

In this reaction, the methanol (CH3OH) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). The bonds between the carbon and hydrogen atoms in the methanol are broken, and new bonds are formed between the carbon and oxygen atoms in the carbon dioxide and between the hydrogen and oxygen atoms in the water. This change in the chemical composition of the substances involved indicates that a chemical change has occurred.