Multiple choice

Water can be split into its constituents by passing electric current through it in a process called ______ .

  1. hydration

  2. electrolysis

  3. autoionisation

  4. evaporation

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Electrolysis is the process of using direct electric current to drive an otherwise non-spontaneous chemical reaction, such as splitting water into hydrogen and oxygen.