Question

Ash cannot be changed back into paper or wood.

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Answer 1

Answer:

When wood is cut into firewood, this is a physical change. The composition of the wood stays the same. In a physical change, the substance usually can be changed back into its original form.Wood changes chemically to carbon dioxide when it burns and leaves a residue of ashes. These ashes cannot be changed back to wood. When air and water act on an object made of iron, a new substance, rust, is formed.

Answer 2

Answer:

Explanation:

When wood is cut into firewood, this is a physical change. The composition of the wood stays the same. In a physical change, the substance usually can be changed back into its original form.Wood changes chemically to carbon dioxide when it burns and leaves a residue of ashes. These ashes cannot be changed back to wood. When air and water act on an object made of iron, a new substance, rust, is formed.