IB Chemistry HL - Key Concepts
In the IB Chemistry HL (Higher Level) Key Concepts section, you will find summary videos that will help you review the most important concepts and skills necessary for success. They are ideal for a quick refresher before tackling questions in the Revision Village Questionbank or Practice Exams sections of the website.
Structure 1
Models of the Particulate Nature of Matter
The Nuclear Atom

13 minutes
Electron Configuration

11 minutes
The Mole

13 minutes
Mole Applications

16 minutes
Ideal Gases

13 minutes
Structure 2
Models of Bonding & Structure
Ionic Bonding

14 minutes
Covalent Bonding

15 minutes
VSEPR & Molecular Polarity

13 minutes
Intermolecular Forces

11 minutes
Metallic Bonding

5 minutes
From Models to Materials

17 minutes
Delocalized Electrons and Resonance

14 minutes
Structure 3
Classification of Matter
Properties of Elements

18 minutes
The Periodic Table - Classification of Elements

15 minutes
Classification of Organic Compounds - Functional Groups

16 minutes
Classification of Organic Compounds - Nomenclature

15 minutes
Classification of Organic Compounds - Homologous Series and Isomers

7 minutes
Reactivity 1
What Drives Chemical Reactions?
Enthalpy Changes

12 minutes
Reactivity 2
How Much, How Fast & How Far?
The Amount of Chemical Change

17 minutes
Rate of Reaction

6 minutes
Collision Theory & Catalysts

8 minutes
Equilibrium

11 minutes
Le Chatelier's Principle

10 minutes
Reactivity 3
Mechanisms of Chemical Change
Theories of Acids & Bases

11 minutes
Properties and Strengths of Acids & Bases

14 minutes
pH & pOH Calculations

8 minutes
Acid-Base Strength, Neutralization Reactions, and pH Curves

16 minutes
Acid-Base Titrations & Titration Curves

18 minutes
pH Titration Curves - Calculations

20 minutes
Lewis Acids and Lewis Bases

11 minutes
Electron Transfer Reactions

19 minutes
Electrochemical Cells

14 minutes
Standard Cell Potential, Electrolysis, and Electroplating

14 minutes
Electron Sharing Reactions

8 minutes
Thank you Revision Village Members
#1 IB Math Resource
Revision Village is ranked the #1 IB Math Resources by IB Students & Teachers.
34% Grade Increase
Revision Village students scored 34% greater than the IB Global Average in their exams (2021).
80% of IB Students
More and more IB students are using Revision Village to prepare for their IB Math Exams.
More IB Chemistry HL Resources
Frequently Asked Questions
What are the Chemistry HL Key Concepts?
The IB Chemistry HL Key Concepts section is one of the four main features on Revision Village for Chemistry HL students (in addition to Questionbank, Practice Exams and Past Papers). The Key Concepts section includes a carefully planned set of Chemistry HL Exam Revision Videos that students can use to refresh specific concepts (e.g. Hess’s Law) that they may have missed or misunderstood in class. The revision videos typically range between 5 and 10 minutes in length and are a short and concise way for students to quickly refresh a concept, before practicing exam questions, either in the Questionbank or Practice Exams section of the Revision Village website.
How should I best use the Chemistry HL Key Concepts?
A great way to improve in Chemistry is by practicing lots of questions, but sometimes we forget key pieces of theory. It’s recommended that students use the Chemistry HL Key Concepts in conjunction with solving exam questions. Stuck on a specific question? Go to the Key Concepts section and watch one of the revision videos that recaps the theory. It’s recommended that students then return to the original question and try and solve it again.
Do the Chemistry HL Key Concept videos replace my textbook?
This is not the aim of the Chemistry HL Key Concept section on Revision Village. These videos are short and concise and aim to ‘recap’ the theory, as opposed to teaching and explaining the theory, which is the purpose of textbooks. The Chemistry HL Key Concept section on Revision Village aims to support students’ revision process by providing an easy way to quickly recap the concepts that occur frequently on IB Chemistry Higher Level examinations.
Who are the teachers in the Chemistry HL Key Concept videos?
The Chemistry HL Key Concept videos on Revision Village are taught by experienced IB Chemistry teachers and examiners, who are passionate about teaching IB Chemistry HL concepts in a simple, intuitive and engaging manner. The team is dedicated to helping each and every student achieve their best possible IB Chemistry grade.