Collision Theory Flashcards
Three things that increase the collisions
Higher temp
Higher concentration
Large surface area
What increases the rate of reaction?
More collisions
Faster collisions
How does higher temp increase collision
Move quicker
More energy
Collide more often
How does higher concentration increase collision
More particles of reactant
More likely collisions
How does larger surface Area increase collisions
More area to collide on
More frequent collisions
Reactions only happen if?
The particles collide with enough energy
What is activation energy?
The minimum amount of energy needed by the particles to react
What speeds up reactions?
Catalysts
What is a catalyst
Substance which speeds up a reaction
Without being changed or used up in a reaction
Advantages of a catalyst (4)
Save money, not operate as long bc faster reactions
Allow reaction to work at lower temp, sustainable development
Good for industrial reactions
Not used up in a reaction, over and over again
Disadvantages of catalyst (4)
V expensive to buy
Need to clean often
Different catalyst for different products, expensive
Catalyst can be poisoned by impurities so clean often
