Concentration Changes: If there are changes in concentration for any species involved in an equilibrium reaction, it can cause an equilibrium shift by affecting the relative amounts of products and reactants.
Pressure Changes: For reactions involving gases, changes in pressure can cause equilibrium shifts since the number of moles of gas on each side affects the balance.
Temperature Changes: Altering the temperature can lead to equilibrium shifts since it affects the value of the equilibrium constant (K) and changes reaction rates.