A solid is produced. Energy is released. Energy is absorbed. Equal numbers of molecules are on both sides of the arrow.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the statements is the most accurate in describing the chemical equation shown below? 2H_{2}(g) + O_{2}(g) -> 2H_{2}O(g) + energy
Possibilities:
- A solid is produced.
- Energy is released.
- Energy is absorbed.
- Equal numbers of molecules are on both sides of the arrow.

Energy is released.