Which of the following choices is the one that does NOT describe a chemical
property?
Concentrated hydrochloric acid will burn a hole in cotton jeans because the acid
breaks down the cellulose fibers in cotton.
Copper metal combines with substances in the air to form a green "patina" that
protects the copper from further reaction.
Copper compounds often form beautiful blue crystals when a solution of a given
copper compound is evaporated slowly.
Oven cleaners contain sodium hydroxide, which converts the grease/oil spatters
inside the oven to water-soluble materials, which can be washed away.
Hydrogen peroxide fizzes when it is applied to a cut or scrape.