Why does calcium start floating when it reacts with water? Write the balanced chemical equation of the reaction. (b) Name two metals which do not react with water.
a) Ca + 2H₂O → Ca(OH)₂ + H₂; Gold and Platinum
b) Ca + 2H₂O → Ca(OH)₂ + H₂; Silver and Copper
c) Ca + 2H₂O → Ca(OH)₂ + H₂; Gold and Silver
d) Ca + 2H₂O → Ca(OH)₂ + H₂; Platinum and Copper
