CHEM245

Transfer of energy from one system to another that is stopped when one system is surrounded by an insulator

The collection of materials that are being studied

A system that allows both matter and energy to cross its system boundary

A system that allows energy but not matter to cross its system boundary

A system that does not allow matter or energy to cross its system boundary

Everything around the system

A system that is large enough that its temperature can be assumed to remain constant. It can supply energy as heat without a significant change in its own temperature.

• You need to know the temperature of both systems
• The system with the higher temperature will transfer energy to the system with the lower temperature