Chemistry Form 4 : Notes
O Level Notes : Chemistry - Macromolecules
Hello students. This is a tricky chapter so I suggest you all pay attention. In...
O Level Notes : Chemistry - Organic Chemistry
Organic chemistry is the chemistry of the compounds of carbon. Actually, it is the...
O Level Notes : Chemistry - Environmental Chemistry
In this topic, we study about air, its pollutants, oxygen, hydrogen, water and more...
O Level Notes : Chemistry - Sulphuric Acid
Hello students. In this topic, we learn about how Sulphuric acid is manufactured...
O Level Notes : Chemistry - Ammonia and its Uses
Ammonia is the most important compound of nitrogen. It is produced industrially...
O Level Notes : Chemistry - Energy from Chemicals
An exothermic reaction is one where energy (heat) is given out causing a temperature...
O Level Notes : Chemistry - Salts
All salts are ionic compounds. A salt is formed when a metallic ion or an ammonium...
O Level Notes : Chemistry - Acids and Bases
Acid is a substance which produces hydrogen ions, H+, when it is dissolved in water....
O Level Notes : Chemistry - Extraction of Metals
Dear students, this is a simple and short topic. We will learn in this lesson how...
O Level Notes : Chemistry - Redox Reactions
Redox reactions are reactions that involve oxidation and reduction. There are several...
O Level Notes : Chemistry - Speed of Reaction
The speed at which a chemical reaction proceeds can vary, and is called the rate...
O Level Notes : Chemistry - Electrolysis
Electrolysis is the process of using electricity to break down or decompose a compound....
O Level Notes : Chemistry - Metals
The physical properties of any substance are determined by the way its particles...
O Level Notes : Chemistry - The Mole - Part 2
In the previous lesson, we learnt what the mole was, and did some related numerical...
O Level Notes : Chemistry - The Mole - Part 1
Understanding the concept of mole is extremely important in chemistry, as it will...
O Level Notes : Chemistry - Covalent and Metallic Bonding
The bond formed between atoms that share electrons is called a covalent bond. After...