Consider the observations you made working with the collisions theory gizmo.
identify a question about chemical reactions with catalysts that you should be able
to answer through investigation using the collision theory gizmo. consider writing
your questions in an "if this… then will that? " kind of format. model your question
on the example from the practice investigation: "if the temperature is increased will
the half-life time of a chemical reaction without a catalyst be decreased? "