2. Water can be decomposed to hydrogen and oxygen AB A + B H 2 O (L) H 2 (g) + O 2 (g) 2 H 2 O (L) 2H 2 (g) + 1O 2 (g)

3. Power Supply Water

4. Water being decomposed by electricity

5. Hydrogen and Oxygen can be recombined by burning hydrogen A + B AB

6. Hydrogen burns with an almost invisible flame. Hydrogen + Oxygen == Water H 2 (g) + O 2 (g) == H 2 O(g)

7. Pure oxygen speeds up combustion since air is only 1/5 oxygen.

8. 2 H 2 O( L ) 2 H 2 ( g ) + 1O 2 ( g ) Decomposition Synthesis ELECTROLYSIS COMBUSTION