Chemistry » Bonding and Atomic Combinations » Chemical Bonds Continued

# Chemical Bonds Continued

## Atomic combinations

In the next set of lessons, we will explore the concept of a covalent bond in greater detail. Earlier, we learnt about the three types of chemical bond (ionic, covalent and metallic). A great video to introduce this next set can be seen below.

### Optional Video: Veritasium Chemical Bonding Song

In this next set, the focus is on the covalent bond. A list of the topics to be covered next follows:

• Electron structure and Lewis diagrams (from grade $$\text{10}$$)
• Why hydrogen is a diatomic molecule but helium is a monatomic molecule
• Deducing simple rules about bond formation (and drawing Lewis diagrams for these molecules)
• The basic principles of VSEPR and predicting molecular shape
• Electronegativity and polarity of bonds
• Bond length and bond energy

We live in a world that is made up of many complex compounds. All around us we see evidence of chemical bonding from the chair you are sitting on, to the book you are holding, to the air you are breathing. Imagine if all the elements on the periodic table did not form bonds but rather remained on their own. Our world would be pretty boring with only $$\text{100}$$ or so elements to use.

Imagine you were painting a picture and wanted to show the colours around you. The only paints you have are red, green, yellow, blue, white and black. Yet you are able to make pink, purple, orange and many other colours by mixing these paints. In the same way, the elements can be thought of as natures paint box. The elements can be joined together in many different ways to make new compounds and so create the world around you.

Earlier, we started exploring chemical bonding. In the next set of lessons, we will go on to explain more about chemical bonding and why chemical bonding occurs. We looked at the three types of bonding: covalent, ionic and metallic. In the next set of lessons, we will focus mainly on covalent bonding and on the molecules that form as a result of covalent bonding.

#### Tip:

In this section we will use the term molecule to mean a covalent molecular structure. This is a covalent compound that interacts and exists as a single entity.