AP®︎ Chemistry: Topic 5.11 Flashcards

A substance that changes a reaction mechanism, lowers activation energy, and is regenerated overall.

The catalyzed pathway uses different elementary steps and a lower activation energy than the original pathway.

They increase effective collisions and/or provide an alternate pathway with lower activation energy.

Temporary binding can orient reactants favorably or lower activation energy by forming a new intermediate.

A temporary species formed when a catalyst is attached to one or more reactants.

Some catalysts form temporary covalent bonds with reactants, creating alternate intermediates and reaction steps.

Biological catalysts that bind substrates, orient them, and lower activation energy for reaction.

It is consumed in one step and regenerated later, so its overall amount stays constant.

Catalysis by proton transfer that forms new intermediates and elementary steps with lower activation energy.

Catalysis on a solid surface where reactants form bound intermediates and react through new steps.