Are these endothermic or exothermic?
A) cracking large hydrocarbon molecules
B) digesting a candy bar
I don't get these. Could someone help me and explain why they are endo or exothermic?
a. breaking large hydrocarbon molecules is definitely endothermic, usually the heat is supplied from a superheated catalyst.
b. digesting a candy bar? exothermic. ATP is given off in cell processes (Krebs cycle and electron transport cycle).
Sure! I can help explain why these processes are classified as either endothermic or exothermic.
A) Cracking large hydrocarbon molecules: This process is called cracking, which refers to breaking down large hydrocarbon molecules into smaller ones. In order to break strong chemical bonds, energy needs to be supplied. Therefore, this process is endothermic because it absorbs heat or energy from its surroundings.
B) Digesting a candy bar: Digestion is a complex biochemical process that involves breaking down food particles into simpler molecules in our body. In this case, as our body breaks down the carbohydrates, proteins, and fats in the candy bar, energy is released. This energy is used by our body to perform various functions such as metabolism, growth, and movement. Since energy is released during digestion, this process is considered exothermic.
To determine whether a process is endothermic or exothermic, you need to examine whether heat or energy is being absorbed or released. In the case of cracking large hydrocarbon molecules, energy is absorbed, so it is endothermic. In the case of digesting a candy bar, energy is released, so it is exothermic.