Answer:
See below
Step-by-step explanation:
An exothermic reaction tends to occur spontaneously because the products are more stable than the reactants.
Nature tries to get to the lowest energy state.
Answer:
Copper Wire
Explanation:
Copper is a pure substance but they used it to make a man-made material. Therefore, it's not pure anymore.
Answer:
it is in the same phase as the reactants
Answer:
chemical change bcoz it cannot be in the past form
