Answer :

Chemical change results from the breakdown of starch into glucose by saliva.

Chemical changes occur when one substance combines with another to form a new substance, which is known as chemical synthesis, or when two or more different substances combine to form a new substance, which is known as chemical decomposition. These processes are known as chemical reactions, and they are generally irreversible except through further chemical reactions. Chemical changes include burning, cooking, rusting, and rotting.

Important chemical reactions in biological systems include: Water and CO2 combine to form glucose and oxygen. The process of converting glucose into carbon dioxide and water. Oxyhaemoglobin is formed by the reaction of haemoglobin and oxygen.

Amylases break down starch into smaller molecules, producing maltose, which is then cleaved into two glucose molecules by maltase.

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