Begin by exploring topics. One way to do this is to find an interesting article from one of the databases below. Popular sources like these help you get ideas before you dive into scholarly research.
You can search for a topic using the searchbox (blue box 1) or browse all chemistry topics (orange box 2).
Narrow your interest and decide what question your paper will answer. It seems counterintuitive, but a narrow topic is actually easier to research than a broad one.
How does caffeine chemically affect the human brain?