No, iron (Fe) and silicon (Si) are not chemical compounds. They are elements.

Here's why:

* Elements are pure substances that cannot be broken down into simpler substances by chemical means. They are found on the periodic table.

* Chemical compounds are formed when two or more different elements combine chemically in a fixed ratio. For example, water (H₂O) is a compound made from hydrogen and oxygen.

Iron and silicon exist in their pure elemental form, making them elements, not compounds.