Question

Physical or chemical property? Put the words into the correct category (:WORD BANK: -boiling point -ability to rust -melting point -brittleness -reactivity with vinegar -elasticity -flammability -density -transparency -ductility chemical property: - - - physical property - - - - - - -

Answer 1

physical : boiling point , melting point. 
chemical : brittleness , ability to rust.