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A. Burning a piece of paper is technically called combustion. It represents a chemical reaction whereby the carbon compounds in the paper are oxidized into different chemicals like carbon dioxide and water vapor. This is a chemical change.
a physical property is the freezing point of water is 0C a physical change is actual water freezing or ice melting a chemical property is that paper burns in the presence of oxygen and high enough temperatures, a chemical change is actual paper burning and producing ash and other by products.