Tag: o level revision notes

Electrolysis is the process of using electricity to break down or decompose a compound. It takes a place in an electrolytic cell, which works like an electric circuit and has three main components: a battery, electrodes and an electrolyte.

The physical properties of any substance are determined by the way its particles are arranged or packed. In a metal, atoms are packed tightly in layers and are held together by strong metallic bonds. Due to these strong metallic bonds, metals usually have high densities, melting points and boiling points.

In the previous lesson, we learnt what the mole was, and did some related numerical questions related to it.

Understanding the concept of mole is extremely important in chemistry, as it will be there in almost everything related to this subject. From paper point of view, it will be important in MCQs and theory paper, as well as practical or A.T.P paper. To make it simpler, I have decided to teach this topic in two parts. This is the first part of the lesson.

The bond formed between atoms that share electrons is called a covalent bond. After bonding, each electron attains the electronic configuration of a noble gas, or attains stability.

Dear students, from here the tricky part of chemistry starts. So as not to confuse you, I have divided the chapter of ‘bonding’ into two parts: ionic bonding, and covalent and metallic bonding. This lecture deals only with ionic bonding.

The Periodic Table is an arrangement of elements in order of their increasing proton (atomic) number.

Dear students, this topic is about the atom and its structure. Understanding this structure in chemistry is essential to further understand things such as chemical properties, bonding, etc.

An element is a substance that cannot be split into two or more simpler substances by chemical means or by electricity.