Asked in PMC Practice Test 9 (2021) 2021

Anything under study during a chemical reaction in thermodynamics is called _.

Correct answer: B. System

  • A. Analyte
  • B. System
  • C. Surrounding
  • D. Boundary

Explanation

In thermodynamics, a system refers to the part of the universe that is being studied or analyzed. It can be any portion of the universe that is being studied, such as a chemical reaction, a physical process, or a living organism.

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About System, Surroundings and State Functions

A system is the part of the universe under study, while everything outside it is the surroundings; the boundary separates them. State functions such as pressure, temperature, volume, internal energy and enthalpy depend only on the state, unlike heat and work, which depend on the path taken.

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