The equation for the reaction when hydrogen is used as a fuel is shown: $\text{2H}_2 + \text{O}_2 \rightarrow \text{2H}_2\text{O}$. Which statement about this reaction is correct?
- AEnergy is given out so the temperature of the surroundings decreases.
- BEnergy is taken in so the temperature of the surroundings increases.
- CThe reaction is endothermic so the temperature of the surroundings decreases.
- DThe reaction is exothermic so the temperature of the surroundings increases.