Those properties of the system that depend upon the amount of material concerned are called:
Correct answer: B. Extensive properties
- A. Intensive properties
- B. Extensive properties
- C. Physical properties
- D. None of the above
Explanation
The correct answer is Extensive properties. These are properties that change when the size of the sample changes. Common examples include mass, volume, and total energy. They are contrasted with intensive properties, which remain the same regardless of the sample size, such as temperature and pressure. The option for physical properties is misleading as it encompasses both intensive and extensive properties, and 'None of the above' is incorrect because extensive properties do indeed depend on the amount of material.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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