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The bonds in the wood between the atoms in its structure contain potential energy. Lighting the wood on fire introduces a combustion reaction which ignites this energy. Potential energy is transformed into chemical energy as the wood burns to create heat, smoke (released into the air), and soot (by product of burning the wood). 

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When a piece of wood is burned, it undergoes a series of energy transformations that is chemical energy into thermal energy.

What is energy transformation?

The process of transferring energy from one form to another is known as energy transformation or energy conversion. Energy is a quantity in physics that has the ability to perform work or create heat.

Potential energy is included in the bonds between the atoms in the structure of wood. The energy is ignited by lighting the wood on fire, which initiates a combustion reaction. As the wood burns to produce heat, smoke (which is expelled into the air), and soot, potential energy is turned into chemical energy (by product of burning the wood).

So,

When a piece of wood is burned, it undergoes a series of energy transformations that is chemical energy into thermal energy.

Find out more information about thermal energy here:

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