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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)
Power Supply
Water
Water being decomposed by electricity
Hydrogen and Oxygen can be recombined by burning hydrogen
A + B AB
Hydrogen burns with an almost invisible flame.
Hydrogen + Oxygen == Water H 2 (g) + O 2 (g) == H 2 O(g)
Pure oxygen speeds up combustion since air is only 1/5 oxygen.
2 H 2 O(L) 2 H 2 (g) + 1O 2 (g)Decomposition
Synthesis
ELECTROLYSIS
COMBUSTION