State Le Chatelier's principle in your own words.

When a system at equilibrium is subjected to a stress, the equilibrium will shift in a direction that relieves the stress.

For the reversible reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g), predict the shift in equilibrium if more N₂ is added to the system.

The equilibrium will shift to the right (towards the products).

The equilibrium will shift to the left.

The equilibrium will shift to the right (towards the products).

I can predict how changes in concentration, pressure, or temperature affect equilibrium using Le Chatelier's principle.

1
Le Chatelier's principle states that a system at equilibrium will shift to relieve stress induced upon it.
2
Stresses on a system can include changes in concentration, temperature, or volume/pressure.
3
For reactions involving gases, decreasing the volume will increase the pressure, causing the equilibrium to shift towards the side with fewer particles.