acid can cause rocks to weather by chemical reaction
chemically_acidic_substance is not rust_causing_stuff. chemical_decomposition is not chemical_reaction. acid_rock is rock. acid is chemical. acid is not chemical. acid_rock is not music_genre. chemically_acidic_substance is rust_causing_stuff. acid_rock is not rock. propionic_acid is not chemically_acidic_substance. phytochemical is not chemical.