Final answer:
Burning wood is a chemical change that results in the formation of new substances. The mass of the wood changes during the reaction.
Step-by-step explanation:
Burning wood is a chemical change. In a chemical change, the substance undergoes a chemical reaction, resulting in the formation of new substances with different properties. When wood is burned, it reacts with oxygen in the air to produce carbon dioxide, water vapor, and ash.
The mass of the wood is not the same before and after the reaction. Some of the wood is converted into gases, such as carbon dioxide and water vapor, which escape into the air. The remaining ash is the only part of the wood that has mass after the burning process.
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