1. __ boundary a. the condition of a system as described by its properties 2. __ closed system b. a region of space through which mass may flow 3. __ control volume c. whatever is studied 4. __ extensive property d. a transformation from one state to another 5. __ intensive property e. a property whose value for an overall system is the sum of its values for the parts into which the system is divided 6. __ process f. everything external to the system 7. __ property g. a fixed quantity of matter 8. __ state h. a property whose value is independent of the size or extent of a system and may vary from place to place within the system at any moment 9. __ surroundings i. distinguishes the system from its surroundings 10. __ system j. a macroscopic characteristic of a system to which a numerical value can be assigned at a given time without knowledge of the previous behavior of the system g