Oligomer

An oligomer is like a group of friends playing together. Imagine you have a group of toy animals, let's say five of them. Each animal is different, but they all belong to the same group. They may have their own personalities, but they stick together and help each other.

In the same way, an oligomer is made up of small molecules called monomers. These monomers join together, just like your animal friends, to form a larger molecule. They are all similar to each other, although there may be slight differences in each one. Together, they form an oligomer.

Now, imagine you have another group of toy animals, but this time there are only two of them. This smaller group is called a dimer. Just like the larger oligomer, the dimer is made up of two similar but different molecules that combine to form a new, larger molecule.

So, to sum it up, an oligomer is like a group of toy animals playing together, while a dimer is like two best friends hanging out. Both of these are made up of smaller, similar molecules that join together to form a larger one.