Consider an atom that has a electron in an excited state. The electron falls to a lower energy level. What effect does that have on the electron?​

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Answer explain why it is not possible to deduce a complete order of reactivity.