Catalysts (Edexcel GCSE Chemistry Combined Science): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
ShowHide
Practise the cards
12 cards from this deck
What is a catalyst?
What is a catalyst?
Substance that speeds up a reaction but remains unchanged at the end
Why aren't catalysts included in balanced equations?
Why aren't catalysts included in balanced equations?
Not consumed; regenerated & reused in reaction cycles
Main role of catalysts
Main role of catalysts
Speed up chemical reactions
How catalysts work
How catalysts work
Provide alternative pathway with lower activation energy
How does a catalyst affect activation energy?
How does a catalyst affect activation energy?
Lowers it for the reaction
What is activation energy?
What is activation energy?
Minimum energy particles need to react
Why does lower activation energy speed up reactions?
Why does lower activation energy speed up reactions?
More particles have enough energy to successfully react
Catalyst effect on successful collisions
Catalyst effect on successful collisions
Increases their frequency
Why are catalysts used in industry?
Why are catalysts used in industry?
Accelerate reactions for practical manufacturing
Biological catalysts are called
Biological catalysts are called
Enzymes
Role of enzymes
Role of enzymes
Facilitate biochemical reactions in living organisms
Examples of processes enzymes help with
Examples of processes enzymes help with
Digestion, respiration, DNA replication