This document discusses different types of burns, including first, second, and third degree burns. It explains that first degree burns only affect the outer layers of skin and cause redness, while second degree burns go deeper and cause blistering. Third degree burns penetrate all layers of skin and damage tissues below. The document provides guidance on first aid for burns, including immediate cooling of the affected area with water and loosely wrapping burns to prevent infection until medical help arrives. Chemical burns specifically require flushing with water for at least 20 minutes.