🔍 Key Concepts

• Heat transfer vs. no heat transfer • Difference between exo-/endothermic processes and processes defined by heat exchange conditions • Meanings of common thermodynamic terms: adiabatic and isothermal

💭 Think About

• Which option describes a process specifically in terms of whether heat is exchanged with the surroundings, rather than whether temperature changes? • Think about which term means "constant temperature" and which means "no heat is added or removed." • How do exothermic and endothermic processes behave with respect to heat flow direction?

✅ Before You Answer

• Identify which choice refers to no heat exchange with surroundings, not constant temperature or heat release/absorption. • Verify that you are not confusing constant temperature (T) with no heat transfer (Q). • Eliminate any option that explicitly involves heat being given off or taken in.