The negative ion reactions that consist of the formation of carbon dioxide in the atmosphere is generally an exothermic reaction. By definition, an exothermic reaction takes place when the chemical process eventually releases heat as its by-product. It is in contrast in endothermic process wherein heat is absorbed.
Yes, because a mixture is 2 or more substances that are mixed together (not chemically). A mixture could be two different elements physically combined in a set ratio.
<span>C. Gravity acts on all objects in the universe.
think about Newtons Laws of Motion</span>
The answer is number 1 - energy is emitted
Energy is released when an atom in an excited state returns to the ground state.