The change in the wood is reversible. The energy in the wood is destroyed. The change in the wood is physical. The energy in the wood is transformed.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these is true when a piece of wood is completely burned in a fire?
Possibilities:
- The change in the wood is reversible.
- The energy in the wood is destroyed.
- The change in the wood is physical.
- The energy in the wood is transformed.

The energy in the wood is transformed.