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.
A catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.A catalyst will appear in the steps of a reaction mechanism, but it will not appear in the overall chemical reaction (as it is not a reactant or product).Generally, catalysts alter the mechanism of the reaction in a substantial way such that the new barriers along the reaction coordinate are significantly lower. catalyst will appear in the steps of a reaction mechanism, but it will not appear in the overall chemical reaction (as it is not a reactant or product).