how did lavoisier transform the field of chemistry in the late 1700’s?

He proposed the Law of Conservation of Matter, being the first to say that matter can not be created nor destroyed.

Source(s): I’m a scientist who has two years of university chemistry under my belt.

Lavoisier helped transform chemistry from a science of observation to a science of measurement. Toward this end, he developed a balance that could measure small differences in mass. He was part of a general movement toward basing conclusions on experimental evidence.