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
Physics is the scientific study of matter, energy, motion, and force, exploring how they interact and behave within the natural world, including fundamental concepts like mechanics, electricity, magnetism, and waves
Biology is the scientific study of living organisms, including their structure, function, growth, evolution, and distribution. It's a broad field that encompasses many different disciplines.
