Respuesta :
They were natural philosophers that used experimentation to establish the cause effect relations and explanations, in an epoque when many "theories' were not supported by experiments but by some authority (antique philosophers like Aristoteles or the Catholic Church).
Answer:
They gave him the honor and authorship as the father of modern chemistry.
Explanation:
He postulated the mass conservation law, animal respiration phenomena, bodies oxidation, caloric theory, combustion, photosynthesis. So, he was a big deal in chemistry as you can read. Also, he owns the experimental method, which he replaced for the theoretical method, which allowed him to understand better the nature.