The creator of forensic chemistry is considered James Marsh who prepared in 1836 an arsenic test.

forensic entomology, forensic chemistry, forensic medicine.

Forensic chemistry is the application of chemistry to law enforcement or the failure of products and processes.

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Chemistry is involved in forensic chemistry a lot. DNA itself is a molecule and by the application of chemistry, certain evidence can be found. For example, if broke apart a DNA molecule found at a crime scene you would be able to see certain genetic qualities of the culprit.