Acid–base reaction, a type of chemical process typified by the exchange of one or more hydrogen ions, H +, between species that may be neutral (molecules, such as water, H 2 O; or acetic acid, CH 3 CO 2 H) or electrically charged (ions, such as ammonium, NH 4 +; hydroxide, OH −; or carbonate, CO 3 2−).
Bases can be thought of as the chemical opposite of acids. However, some strong acids are able to act as bases. Bases and acids are seen as opposites because the effect of an acid is to increase the hydronium (H 3 O +) concentration in water, whereas bases reduce this concentration.
Polymer chemistry is a chemistry subdiscipline that deals with the structures, chemical synthesis and properties of polymers, primarily synthetic polymers such as plastics and elastomers. Polymer chemistry is related to the broader field of polymer science, which also encompasses polymer physics and polymer engineering.