[thackney]

No, burning hydrogen does not convert mass to energy.

The mass of the reactants will equal the products.

2H₂ + O₂ -> 2H₂O

There are equal amounts of each element on both sides of the equation.

A nuclear reaction is not the same.

[ColdWater]

No, burning hydrogen does not convert mass to energy. The mass of the reactants will equal the products. 2H2 + O2 -> 2H2O There are equal amounts of each element on both sides of the equation. A nuclear reaction is not the same.

Actually, the masses are different, according the the formula E=MC².