Overview. Bacterial pneumonia is an infection in one or both lungs. The bacteria cause the lungâs air sacs (alveoli) to become inflamed and engorged with pus, fluid, and cellular debris. This often impairs the bodyâs ability to exchange oxygen and carbon dioxide.he most common symptoms of bacterial pneumonia are: 1  cough with yellow, green, or blood-tinged mucus. 2  chest pain that worsens when coughing or breathing. 3  sudden onset of chills. 4  fever of 102 degrees or above (lower than 102 in older persons). 5  headache. 6  muscle pain. 7  breathlessness or rapid breathing. 8  lethargy.
In the Lewis model, a base is an electron pair donor. In water, by altering the autoionization equilibrium, bases yield solutions in which the hydrogen ion activity is lower than it is in pure water, i.e., the water has a pH higher than 7.0 at standard conditions.
Bases are typically less reactive and violent than acids. They do still undergo many chemical reactions, especially with organic compounds. A common reactions is saponificiation: the reaction of a base with fat or oil to create soap.leaning products like bleach and ammonia are bases. Chemicals that are acidic or basic are an important part of chemistry. Several different theories explain what composes an acid and a base. The first scientific definition of an acid was proposed by the French chemist Antoine Lavoisier in the eighteenth century.