What do these reactions say about substances and chemical reactions? has to be 8-10 sentences long

A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products.

Explanation:

it marks things for degradation via the proteasome. it alters there celluar location.