Using the internet , research the following terms as they relate to chemical reactions:   collision theory  Be very detailed potential energy diagrams   be very detailed step by step activation energy  be very detailed   Your work should be written in complete sentences, and assume your audience is grade 11 chemistry students who do not understand this unit. Make sure all research is put into your own words!

Chemical reactions occur when reactants collide. What are two factors that may prevent a collision from producing a chemical reaction?

Substances that poison a catalyst pose a major concern for many engineering designs, including those for catalytic converters. One design option is to add materials that react with potential poisons before they reach the catalyst. Among the commonly encountered catalyst poisons are silicon and phosphorus, which typically form phosphate or silicate ions in the oxidizing environment of an engine. Group 2 elements are added to the catalyst to react with these contaminants before they reach the working portion of the catalytic converter. If estimates show that a catalytic converter will be exposed to 625 g of silicon during its lifetime, what mass of beryllium would need to be included in the design?

. Account for the increase in reaction rate brought about by a catalyst.