5.6.1.4 Catalysts Flashcards
1
Q
What is a catalyst?
A
- substance that speeds up a reaction
- is not used up in reaction itself
2
Q
What do different reactions need?
A
- different catalysts
3
Q
What are enzymes?
A
- biological catalysts
4
Q
Why does using a catalyst increase the rate of reaction?
A
- provide a different pathway for reaction, so lower activation energy
- more collisions exceed the lower activation energy
- so more frequent, successful collisions
