More on Molecules

Today, we went through some worksheets and revised on the topic, Atoms and Molecules. Well, we focused more on molecules for this lesson.

I used to think that a molecule is an atom that stands by itself. But now I think that a molecule is actually made up of two or more atoms chemically combined together.

I also used to think that there is only one type of molecules. Now, I think that there are two types of molecules. One type is molecules of elements while the other type is molecules of compounds. Molecules of elements consist of a fixed number of same type of atoms chemically combined together. This type of molecules is called diatomic molecules. As for molecules of compounds, they are made up of a fixed number of different types of atoms chemically combined together.

There is also a chemical formula to represent a compound. The formula tells us about the types of atoms present in the compound and the ratio of different atoms found in the compound.

(Top - Molecules of Elements. Bottom - Molecules of Compounds)

Sources: Google Images