Chemical Bonding and Equation Writing

In this topic, we learnt about Chemical bonding, which relates to the topics taught in the past such as the Periodic table and Atomic Structure. We also learn about equation writing, which is very challenging. Here goes: 

There are namely 3 types of chemical bonding, Metallic bonding, Covalent bonding and Ionic bonding.each other.

Ionic bonding is the Ionic bonding is usually formed between metals and non-metals.

Ionic bonds result from the transfer of electrons from metal atoms to non-metal atoms forming positive and negative ions. The electrical forces between oppositely charged ions produce strong ionic bonds, thus the name Ionic bonding.

Convalent bonding, however, is usually formed between non-metals. A covalent bond is formed by the sharing of a pair of electrons between two atoms. Each atom contributes one electron to the bond. 



The main part of this chapter is drawing diagrams. We learnt how to draw a dot and cross diagram:

It shows how the electrons are transfered in the diagram and there are some rules to follow. For example, after drawing the diagram we have to show the amount of charges of ions.

Equation writing

Equation writing is very simple, although some are quite tricky. You have to balance the equation by ensuring that there are the same number of each in the equation. For example: 

CH₄+ 2 O₂ CO₂+ 2 H₂O, in the burning of methane.

Reflections

I feel that this topic is slightly difficult as I am not really good at doing diagrams and this topic involves a lot of that. However, it is rather straight forward. One mistake I always make is writing the ion charges as I always forget. Also, I have to keep referring to the periodic table because I cannot remember the mass number of elements. This hindered my learning process. However I did manage to handle this topic as it is very brief and easy to understand!