Which of the following is best described as the study of the nature of matter, especially at the atomic and molecular level?

Question

by the way this is physical science question

Answer 1

Choose chemistry, if you think that things like the chemical behavior (chemical reactions) of molecules is what your course is about. Choose physics, if you think that the physical behavior, such as interaction of molecules with light, or with other molecules WITHOUT chemically reacting is what your course is about.

Answer 2

I have dealt with atoms, molecules and their interaction in at least three different subject areas:

Physics - Atomic models, electromagnetic radiation, spectroscopy.

Inorganic/Physical Chemistry - Orbital electrons, ionization energies, valencies, bonds.

Organic/Bio-Chemistry/Physiology - Carbohydrates, Proteins, Citric Acid Cycle, many other chain formations.