A Chemical change occurs when methane gas is burned.
A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed.
A chemical change occurs when matter undergoes a change to form a new substance with different chemical properties, and the reaction is usually not reversible.
In this case,burning of methane gas (CH₄) considered as chemical change.
Oxygen and methane are the reactants, while the new substance formed from the reaction are carbondioxide (CO₂) and water (H₂O) as ;
CH₄ + O₂ ---> CO₂ + H₂O
Hence, Chemical change occurs when methane gas is burned.
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