equilibrium state

An equilibrium state occurs when a system's opposing processes are balanced, resulting in no overall change over time. For example, in a chemical reaction, equilibrium is reached when the forward and reverse reactions happen at the same rate, so the amounts of reactants and products remain constant. Similarly, in nature, a pond's water level stays steady if inflows (like rain) match outflows (like evaporation). In essence, equilibrium is a stable condition where everything is balanced, though individual processes may still be happening at the microscopic level.