This is the compilation of all HL terminologies and equations in each chapter that students must know. Some definitions are indeed asked in real IB exams, and others are terms students need to understand in order to absorb concepts more effectively. It also provides an overview of what each chapter is focusing on. Having this by your side when studying IB chemistry would be extremely helpful to see the entire syllabus just with terminologies.


[Table of contents]


[Sample excerpts]


This textbook is designed to assist you in answering question types that are formulated as “Define / Describe / What is meant by”. Also, essential formulas in each topic are listed. Note that most of the formulas are given in Data booklet.


Chapter 8: Acids and Bases

Arrhenius acid: a substance that produces H+ in aqueous solution

Arrhenius base: a substance that produces OH– in aqueous solution

Brønsted-Lowry acid: a substance that donates a proton (proton donor)

Brønsted-Lowry base: a substance that accepts a proton (proton acceptor)

Lewis acid: a substance that accepts a pair of electrons (electron pair acceptor)

Lewis base: a substance that donates a pair of electrons (electron pair donor)

Conjugate acid: a substance formed when a base has accepted a proton

Conjugate base: a substance formed when an acid has donated a proton

Amphiprotic: a substance that can act as both Brønsted-Lowry acid and base

≡ can accept and/or donate a proton

Amphoteric: a substance that can act as both Lewis acid and base

Salt: a compound composed of an anion and a cation (ionic compound)



  • Total number of pages: 16 pages
  • Topic: IB Chemistry HL definitions and equations
  • Subject: Chemistry
  • The file is in PDF format.