Short answers, pulled from the story.
Antoine Lavoisier proved that fire was a reaction with oxygen in the year 1785. This discovery shattered centuries of scientific dogma and ended the dominance of the phlogiston theory which had persisted since 1667. Lavoisier demonstrated that combustion was actually a combination of fuel with atmospheric oxygen rather than the release of a fire-like element.
The Haber process is a method for synthesizing ammonia that was developed between 1909 and 1910. This process fundamentally changed agriculture and warfare by enabling the large-scale production of ammonia. It required a deep understanding of kinetics to optimize conditions for ammonia synthesis while balancing pressure and temperature with catalyst activity.
The Arrhenius equation describes how the rate constant of a reaction depends on activation energy and temperature. Formulated by Svante Arrhenius in 1909, the equation reveals that higher temperatures increase molecular energy to create more collisions per unit of time. This relationship links activation energy to the rate constant and serves as a cornerstone of chemical kinetics.
The SN1 reaction proceeds in two steps creating a carbocation intermediate that leads to geometric isomers. The SN2 mechanism involves a simultaneous attack and departure resulting in a Walden inversion of stereochemistry. These mechanisms differ in their stereochemical outcomes and the number of steps required to complete the substitution.
Enzymes function as catalysts by providing a unique environment in their active site where molecular shape and bond strain facilitate reactions. The induced fit model describes how the enzyme changes shape to accommodate the substrate ensuring that only specific reactions occur. These proteins drive life processes by lowering the energy barrier for reactions that are otherwise impossible under ordinary conditions.