In a spectroscopy experiment, a student supplies energy to dissociate gaseous \(\text{H}_2\). Some of the resulting hydrogen atoms later recombine. To isolate the energy associated with the bond, the student represents the changes below and compares all species at the same temperature.

Process	Isolated bond change
1	\(\text{H}_2\text{(g)} \rightarrow 2\text{H(g)}\)
2	\(2\text{H(g)} \rightarrow \text{H}_2\text{(g)}\)

No other bonds are broken or formed. Which statement correctly identifies the signs of \(\Delta H_1\) and \(\Delta H_2\) and explains them using a particle-attraction model?