Question

define chemistry
chemistry is the science that studies the molecular transformations only in living matter.
chemistry is the science that studies the molecular transformations only in nonliving matter
chemistry is the science that seeks to understand what matter does by studying what atoms and molecules do
chemistry is the science of matter and its motion, as well as space and time - the science that deals with concepts such as force, energy, mass, and charge

Explanation:

Chemistry studies matter at the atomic and molecular level. It's not limited to living or non - living matter (so first two options are wrong). The fourth option describes physics (concepts like force, energy). The third option is correct as chemistry aims to understand matter's behavior by studying atoms and molecules.

Answer:

Chemistry is the science that seeks to understand what matter does by studying what atoms and molecules do.