High school chemistry. Urgent! Thank you all. help me

1. Generally speaking, the more active the element, the higher the energy, the more stable the compound and the higher the energy released. (It means that the energy of the compound formed by A is lower than that of the compound formed by B, and the stability of B is stronger than that of A. ") This is a bit contradictory.

3. explain it first. 3. The main factors that affect the chemical reaction rate are: First, the energy of molecules is high enough to become activated molecules, so that the old chemical bonds are broken when molecules collide. (This is why increasing the temperature can speed up the reaction; The catalyst can reduce the activation energy of molecules and break old chemical bonds without high energy. Secondly, molecules can collide together, which requires probability, so increasing concentration, increasing pressure and increasing solid surface area can speed up the reaction.

2. The catalyst reduces the molecular activation energy of reactants and products to the same extent, and increases the forward and reverse reaction rates to the same extent.