Nails are made primarily of a protein called keratin. While there isn't a list of five specific chemicals, the following components are crucial to their structure and function:

1. Keratin: The main building block of nails, forming long chains of amino acids. It's similar to the protein in hair and skin.

2. Water: Nails contain a small amount of water, contributing to their flexibility and elasticity.

3. Trace elements: Minerals like sulfur, zinc, and calcium are present in trace amounts, influencing nail health and strength.

4. Lipids: These fatty substances act as a barrier, helping to protect the nail from drying out.

5. Pigments: These give nails their natural color, but they can also be altered by artificial coloring agents.

It's important to remember that the chemical composition of nails can vary slightly depending on factors like diet, genetics, and overall health.