The reactivity series is a list that shows the order of reactivity of some common metals. Calcium (Ca) Reacts vigorously with strong heating. Brick red flame observed and white solid formed. 2Ca + O 2 ...

Potassium reacts quickly with water producing a lilac-coloured flame For example, when potassium is added to water, the metal melts and floats. It moves around very quickly on the surface of the water ...