Definition: Physical chemistry deals with the interactions between atoms, molecules, and other macroscopic objects in a real-world context. It studies how these substances interact to form chemical reactions. The word "physical" refers to the physical properties that determine the behavior of matter at different scales (such as temperature, pressure, and volume). The word "chemistry" is the branch of science that deals with the chemical processes that occur inside an object or system. Physical chemistry is a fundamental discipline in chemistry that studies how substances interact with each other. It also considers how these interactions can be controlled by manipulating physical properties of matter. Physical chemistry has many applications, including medicine, biology, and engineering, among others.
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