Here are the chemical elements you would expect to find in amino acids:

* Carbon (C): The backbone of the amino acid is a chain of carbon atoms.

* Hydrogen (H): Found in various positions on the molecule.

* Oxygen (O): Part of the carboxyl group (-COOH) and sometimes in the side chain (R group).

* Nitrogen (N): Found in the amino group (-NH2).

* Sometimes Sulfur (S): Found in some amino acids like cysteine and methionine.

Let me know if you'd like to explore the structure of an amino acid in more detail!