Question 1 What happens when metals react with chlorine? Question 2 What happens when metals react with hydrogen? The reaction of metal with Chlorine Metals react with chlorine to form ionic chlorides. 2Na(s) + Cl2 (g) → 2 NaCl(s) Ca (s) + Cl2 (g) → CaCl2 Mg (s) + Cl2 (g) → MgCl2 The reaction of Metals with Hydrogen Most of the metals do not combine with … [Read more...] about Reaction of Metal with Chlorine and Hydrogen