A scientist in a lab creates a mystery element with an atomic mass of approximately 19. It is more electronegative than lithium or sodium, and its atomic radius is smaller than beryllium. The scientist thinks it must be the alkali metal potassium. Do you agree? Use claim, evidence, and reasoning to support your answer.

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next