The crossword solutions for the term BICARBONATE TARGET are 'ACID', which is a four letter word. Bicarbonate is an ion composed of carbon, hydrogen, and oxygen atoms, and it is found in many natural sources such as minerals, plants, and animals. It is also a component of baking soda, and it is used to neutralize acids. The target of bicarbonate is ACID, which is a compound that releases hydrogen ions when dissolved in water. Acids have a sour taste and can corrode metals, and they are essential for many biochemical processes.