There are a lot of hazards in a chemistry lab. You've got chemicals, breakables, and open flames. So, accidents are bound to happen.
Most common injuries can be prevented by minimizing accidents by being careful, wearing proper safety gear
and knowing what to do in the event of an emergency.
What are your biggest risks? Here's an informal look at common injuries.
http://chemistry.about.com/od/labsafety/fl/What-Are-the-Most-Common-Injuries-in-a-Chemistry-Lab.htm