Physics is the branch of science that deals with the structure of matter and how the fundamental constituents of the universe interact. It studies objects ranging from the very small using quantum mechanics to the entire universe using general relativity.
Chemistry
Chemistry is a
branch of natural science that deals principally with the properties of
substances, the changes they undergo, and the natural laws that
describe these changes.
Mathematics
Mathematics is the science and study of quality, structure, space, and change.
Mathematicians seek out patterns, formulate new conjectures, and
establish truth by rigorous deduction from appropriately chosen axioms
and definitions.
Biology
Biology is the branch of science that primarily deals with the structure, function, growth, evolution, and distribution of organisms. As a science, it is a methodological study of life and living things.