Practice: What are the signs of q and w when a system loses heat while doing work on the surroundings?
The First Law of Thermodynamics states that energy cannot be created nor destroyed, but instead is transferred.
Concept #1: First Law of Thermodynamics
Example #1: A chemist wishing to determine the final temperature of 30.0 g of a metal ore places it into an insulated beaker containing 615.5 g of water at 42.18 ºC. It is determined that the metal gains 19.11 kJ of energy. From the information provided, determine the system and the surroundings.
Concept #2: Heat and Work
Heat is the flow of thermal energy while work is the movement of reacting molecules.
Concept #3: Heat and Work Chart
Practice: What are the signs of q and w when a system loses heat while doing work on the surroundings?
