Identify the type of chemical reaction involved in each action. tiles combustion reaction photosynthesis respiration.

Which substances have the lowest melting points: ionic covalent, or metallic

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

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