What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place.

43 How do metals react with hydrogen? Explain with an example. 43 How do non-metals react with hydrogen? Explain with an example. 44 What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved. 45 Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first: Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.