In many cases of modern chemical reactionsdescriptions, the number of variables in calculations becomes too large and numerical simulation methods are required to obtain solutions. One of such methods is molecular dynamics, based on Newton's equations of motion, and can be successfully used to analyze and predict chemical and physical processes involved in chemical reactions. Theoretical basics will be presented as well as simplifications that greatly reduce the computation time and smooth operation of molecular dynamics algorithms. The challenges and problems faced by researchers in the field of chemical reaction modelling and some examples of molecular dynamics studies will also be presented.
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