Le Chatelier's Principle and Its Effects on Chemical Equilibrium

Le Chatelier's Principle and Its Effects on Chemical Equilibrium

Assessment

Interactive Video

Chemistry, Science, Physics

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

Professor Dave explains Le Chatelier's principle, which describes how a system at equilibrium responds to stress. He discusses three types of stress: changes in concentration, temperature, and volume/pressure. For concentration, adding reactants or products shifts equilibrium to restore balance. Temperature changes depend on whether a reaction is exothermic or endothermic, affecting equilibrium by treating heat as a reactant or product. Volume and pressure changes, especially in gases, shift equilibrium based on particle count. The video concludes with a comprehension check and encourages further learning.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does Le Chatelier's Principle primarily describe?

The behavior of gases under pressure

The shift in equilibrium due to applied stress

The formation of chemical bonds

The rate of chemical reactions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If more reactants are added to a system at equilibrium, what is the expected shift?

The equilibrium shifts to the left

The equilibrium remains unchanged

The equilibrium shifts to the right

The reaction stops

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the equilibrium if products are removed from the system?

The equilibrium shifts to the right

The equilibrium shifts to the left

The reaction stops

The equilibrium remains unchanged

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does an exothermic reaction respond to an increase in temperature?

The equilibrium shifts to the right

The equilibrium shifts to the left

The reaction rate decreases

The reaction stops

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an endothermic reaction, what role does heat play?

Heat is a product

Heat is a reactant

Heat is a catalyst

Heat is irrelevant

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of cooling down an exothermic reaction?

The equilibrium shifts to the left

The reaction stops

The equilibrium shifts to the right

The reaction rate increases

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to Boyle's Law, what happens to pressure when volume decreases?

Pressure decreases

Pressure remains constant

Pressure increases

Pressure becomes zero

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