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Questions 5.3

  1. State one similarity in products between reaction of metal with water and reaction of metal with steam. ----------------------------------------
  2. Identify one difference in products between reaction of metal with steam and reaction of metal with water ----------------------------------------------------------------
  3. Write word equations for the reaction between
    1. magnesium and steam ------------------
    2. sodium and steam ----------------------------------
    3. potassium and steam ----------------------------------
    4. calcium and steam ------------------------------------
  4. Write a general equation for the reaction between metal and steam. ----------


Answers to Questions 5.3

  1. In both cases, hydrogen gas is produced.
  2. With water, a basic solution of metal hydroxide is formed. With steam, white solid (powder) metal oxides are formed.
    1. Magnesium + Steam  ⟶   Magnesium oxide + Hydrogen
    2. Sodium + Steam   ⟶   Sodium oxide + Hydrogen
    3. Potassium + Steam  ⟶   Potassium oxide + Hydrogen
    4. Calcium + Steam   ⟶   Calcium oxide + Hydrogen
  3. Metal + Steam   ⟶   Metal oxide + Hydrogen