Which of these is an example of a chemical change rather than a physical change?

WOOD BURNING is a CHEMICAL CHANGE — it produces new substances (ash, gases) and cannot be reversed; the chemical composition changes. ASVAB General Science distinguishes physical vs chemical changes. PHYSICAL CHANGES (no new substance, often reversible): melting ice, boiling water, tearing paper, dissolving salt — the substance changes form/state but remains the same chemically. CHEMICAL CHANGES (new substances form): burning, rusting, cooking, digestion. Burning wood is a classic chemical change (combustion); the others listed are physical changes.