Basque PAU Graphic-Plastic Techniques Practice Questions - Basque Country PAU Graphic-Plastic Expression Techniques Examination - UPV EHU (2o Bachillerato 2026) Exam

Vine charcoal contains organic wax binders, while compressed charcoal is pure burnt wood residue Vine charcoal is uncompressed charred wood containing no added binder, making it easy to erase and smudge, whereas compressed charcoal uses gum or clay binders for deeper black tones Compressed charcoal dissolves completely in water to form washes, while vine charcoal is entirely water-insoluble Vine charcoal produces permanent dark marks that cannot be lifted with a kneaded eraser, whereas compressed charcoal brushes off paper easily