Instant Access To 100,000+ Essays!

The risks of using hydrogen are that it is extremely flammable. Hydrogen gas, because it is lighter than air, floats upward in the atmosphere. People once used it to lift zeppelins and other airships into the sky, allowing voyages by air. However, because the gas is so flammable, it caused many explosive accidents, including the Hindenberg explosion in 1937. Airships now use helium gas because it is nonflammable and therefore a safer lifting gas. Some uses of hydrogen are: • hydrogenation of fats and oils â