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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.
Chemicals Used in Paper Recycling Mills. The paper recycling process, while using fewer chemicals and polluting less than virgin paper, still impacts the environment. Not all recycled paper is the same. Much recycled paper contains a mix of virgin and recycled pulp to strengthen deteriorating fibers. The higher the content of recycled pulp, the less chemicals needed for bleaching. Not all recycling plants use the same processes and chemicals, and some are more harmful to the environment than others.