1 Time-Pathogenic bacteria need enough time in order to multiply. 2  The number of bacteria will reach dangerous levels very quickly in a short period of time in perfect conditions. 3  Keep in mind that bacteria can reproduce every 20 minutes in perfect conditions.
Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes may occur. The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants.
Surfactant Definition: Surfactant is the word that combines the terms surface active agent.Chemical species that acts as wetting agents to lower the surface tension of a liquid and allow for increased spreadability.This can be at a liquid-liquid interface or a liquid-gas interface. Also Known As: tenside. Examples: coating on the surface of the alveoli in the lungs.urfactant Definition: Surfactant is the word that combines the terms surface active agent.