C6 - The Rate And Extent Of Chemical Change [2] Flashcards
What does a steep line on a rate of reaction graph mean?
It’s a fast rate
What are the conditions for particles to react
0The rate of collisions
0 Collisions with the minimum amount of activation energy
Name (4) factors that effect the rate of reaction
- Surface area of particles 2. Temperature 3. Concentration (pressure for gases) 4. Presence of a catalyst
What does a catalyst do?
Speed up the rate of a reaction
How does a higher temperature affect the rate of reaction
The rate of reaction increases
How does a higher concentration affect the rate of reaction
Increases rate of reaction
How does a larger surface area affect the rate of reaction
Increases rate of reaction
How do catalysts increase the rate of reaction
They lower the activation energy
How to calculate the rate of reaction
Amount of energy used or products produced (divided) time
What does ⇌ mean
The reaction is reversible
How does a reaction reach equilibrium
If the reaction takes place in a closed system
What does an endothermic reaction mean
That energy is transfers from the surrounding as the reaction occurs
What does an exothermic reaction mean?
That energy is transfers from the reaction to surroundings
What is a key word in discussing factors affecting reaction
FREQUENCY
