Final answer:
Third-degree burns can have a leathery texture and may appear white, red, or black, but they should not be generalized simply as hard. They cause extensive damage, destroying both the epidermis and dermis, and require immediate medical attention.
Step-by-step explanation:
A third-degree burn is characterized by extensive damage that fully extends into the epidermis and dermis, destroying the tissue. This type of burn can appear white, red, or black and often has a leathery texture, which can be misconstrued as hard. Despite potentially appearing dry or leathery, it's not appropriate to simply characterize a third-degree burn as 'hard,' as this does not capture the seriousness of the injury or its implications on health. Due to the destruction of nerve endings in the affected area, third-degree burns may paradoxically be less painful immediately after the injury, but they are very serious and require immediate medical attention. These burns heal slowly and typically require medical interventions such as debridement or skin grafting.