Most acids are characterized by free H+ ions (not OH-, those are bases) which tend to attack and destroy a variety of organic compounds. This destruction is very similar to the destruction caused by heat, and produces similar sensations and scarring.Strong bases also burn skin, for the same reasons.ost acids are characterized by free H+ ions (not OH-, those are bases) which tend to attack and destroy a variety of organic compounds. This destruction is very similar to the destruction caused by heat, and produces similar sensations and scarring.