Understanding the First Law of Thermodynamics

Skibidi boom! The First Law of Thermodynamics is all about energy, fam. It says energy is just chilling, transforming from one vibe to another but never disappearing, like a goon in a toilet. You measure the internal energy change, from Ui to Uf, lowkey like checking your phone battery. In chemistry, we focus on that energy shift in the system, not the surrounding drama. Energy transfers happen through heat and work, like when that combustion engine goes vroom. When gas expands, it pushes a piston, doing work against pressure. It is all about that mechanical energy flow, bro. Sigma energy moves through conversions, and you know we love those joules!