## What do we learn in physics thermodynamics?

In this chapter we will learn about the laws of thermodynamics which describes the system in terms of macroscopic variables, reversible and irreversible processes. Finally we will also learn on what principle heat engines, refrigerators and Carnot engine work.

Which is the simplest form of thermodynamics?

Thermodynamics is a branch of chemistry that deals with energy, its forces & its inter-conversion. According to law of conservation of energy the total energy change in the universe is constant however it can be converted from one form to another. The simplest form of energy = Heat.

### Why is thermodynamics considered as a macroscopic science?

We can also consider it as a macroscopic science which deals with bulk systems and tells us about system as a whole. In this chapter we will learn about the laws of thermodynamics which describes the system in terms of macroscopic variables, reversible and irreversible processes.

Is thermodynamics a macroscopic branch of Physics?

Thermodynamics is that branch of physics which deals with concepts of heat and temperature and their relation to energy and work. We can also consider it as a macroscopic science which deals with bulk systems and tells us about system as a whole.

#### Which is the zeroth law of thermodynamics?

Zeroth law of thermodynamics states that when two systems are in thermal equilibrium through a third system separately then they are in thermal equilibrium with each other also. Foreg: – Consider two systems A and B which are separated by an adiabatic wall.

What does ΔU stand for in thermodynamics?

ΔU is the change in the energy of the system to change from initial state to final state. Internal energy is a state variable which means it is path independent. It does not depend how state changes from initial to final. But the work done and heat is path dependent. It depends on how the path changes from initial to final.