Undergraduate research always helps you get into graduate school, as well as many other benefits.
The easiest way is to just ask a professor. See if your schools Chemistry websites list what the professors area of research is, and if you really like one, just ask that professor. If you have had a class with them and did good, even better. But even if you have not had a class with them, just tell them you are interested in the research they are doing and would like to try and get in on it.
Most professors set aside a small amount of money from their grant to pay graduates and undergraduates that help them with their research, too! They just have to have an open slot, and not think you are an idiot.