change that results in the formation of one or more new substances
~ a change that produces matter with a different chemical makeup from the original matter.
~ For example, when you strike a match, the wood burns, consumes oxygen, and gives off light and heat. The wood in the match changes to charcoal (carbon), which is not the same chemical form of matter as the original wood.
~ Specifically, the cellulose in wood has changed or reacted with oxygen to produce carbon, water vapor, and energy.
~ So flammability, or the ability to burn, is a chemical property of wood.