Chemistry Explanations for understanding A-Level

Welcome to Chemistry Explained!

Here you can find explanations of the concepts involved in A-Level chemistry and sets of questions to help develop your understanding.

To get started, choose one of the links below or use the Search function to find topics on this site.

Latest Updates:

New Page: Covalent bonds and the octet rule3rd Dec 2025
A new page has just been published that discusses the octet rule, covalent bonds and dot-cross diagrams. A good introductory page… Read more: New Page: Covalent bonds and the octet rule
Covalent Bonds – electrostatic attractions20th Nov 2025
New page now released on covalent bonds and one approach to understanding the electrostatic attractions and repulsions involved. Click here to… Read more: Covalent Bonds – electrostatic attractions
New page: Errors in making a standard solution15th Nov 2025
To follow on from the page describing the process of preparing a standard solution, this new page considers the common errors… Read more: New page: Errors in making a standard solution
Bullet-point summaries3rd Nov 2025
See links at the end of each page to a concise bullet-point summary you can use to check your understanding of… Read more: Bullet-point summaries
New Explanations Page1st Nov 2025
A new page in the Experimental Section has been released, covering the procedure for preparing a standard solution. Click here to… Read more: New Explanations Page