3.1

A thermodynamic system includes anything whose thermodynamic properties are of interest: __.

thermodynamic system

A __ separates a thermodynamic system from its surroundings.

boundary

An __ is a system that can exchange both energy and matter with its surroundings.

open system

A __ (or isolated system) is completely separated from its environment and cannot exchange energy or matter.

closed system

Thermal equilibrium is reached when the temperature is the same across different objects in contact and __ is zero.

net heat transfer

If object 1 is in thermal equilibrium with objects 2 and 3, then __ must also be in thermal equilibrium with each other.

objects 2 and 3

If __ = T2 and T1 = T3, then T2 = T_3.

T_1

An equation of state is the relationship between a system's pressure, volume, and __.

temperature

An __ variable doubles its value if the amount of matter in the system doubles.

extensive

__ (like pressure or temperature) do not change their value based on the amount of matter in the system.

Intensive variables