corrosive substance can cause harm to the eyes & acids are corrosive & a base is corrosive ->  acids and bases can cause harm to the eyes  acids and bases can cause harm to the eyes & students have to work with acids and bases for experiments ->  acids and bases may cause harm to students' eyes during experiments  acids and bases may cause harm to students' eyes during experiments & safety goggles are used for protecting the eyes during experiments -> safety goggles can be used to protect students' eyes from acids and bases