Naming and Understanding covalent and ionic compounds. (metals and nonmetals)

You are probably one of those people who have a hard time trying to figure out how what's the differences between covalent or ionic from it's formula. Well I want to teach you a fast and easy way to  name them without stressing over it! Also how you will find the nonmetals and metal elements.

There is two types of covalent formulas.
*Nonmetal which is covalent
*ionic which is a nonmetal and a metal put together.

How to find out which elements are metal or nonmetal??
Well really easy you just look at a periodic table.

Here is a periodic table with nonmetals and metal elements.
























You probably notice a group in the middle that is called "metalloids"which means that they are chemical elements that have a mixture of both metal and nonmetal which  they are hard to classify the elements. Even then they are still used in the chemistry literature.  

Now that you know where the nonmetals and where the metals are you're ready to start naming ionic and covalent formulas.


FOR EXAMPLE:
SO2 ~> since sulfate is a nonmetal and Oxygen is a nonmetal it will be a covalent formula.
Na2O ~> Sodium is a metal and Oxygen is a nonmetal so that makes the formula ionic.