When metals react with acids, a salt of the metal and hydrogen gas are formed. We can investigate the reactivity of different metals by placing samples in acid and comparing the results.

Do not attempt to perform this demonstration. Small pieces of solid calcium metal are placed in two different concentrations of two different acids (hydrochloric acid and nitric acid). The calcium ...

Transition metals have long been used ... of two components -- one acting as a Lewis acid and the other as a Lewis base -- that are unable to fully react with each other due to spatial or ...