* Chemical Compounds: These are substances formed when two or more different elements are chemically bonded together in a fixed ratio. For example, water (H₂O) is a compound made of hydrogen and oxygen.

* Enriched Flour: This is a type of wheat flour that has been processed and then had certain nutrients (like iron, thiamin, niacin, and riboflavin) added back in. It's still primarily made up of complex carbohydrates (starch) and proteins (gluten), just like regular wheat flour.

In short, enriched flour is a mixture, not a compound. It's made up of many different substances, including carbohydrates, proteins, and the added nutrients, but these are not chemically bonded together.