Hello,
Here are your answers:
The proper answers to your questions are....
1. "Chemical bond energy is converted to kinetic energy"...... which causes it to release energy around its surroundings!
2. "Endothermic reactions"...... Endothermic reactions are the things that absorb the energy!
If you need anymore help feel free to ask me!
Hope this helps!
Aldehydes are usually more reactive<span> toward nucleophilic substitutions </span>than<span> ketones because of both steric and electronic effects. In aldehydes, the relatively small hydrogen atom is attached to one side of the carbonyl group, while a larger R group is affixed to the other side.</span>