Rates Of Reaction And Energy Changes Flashcards
1
Q
What is a rate of reactions
A
How quickly a reaction happens
2
Q
What is the calculation for the rate of reaction
A
Rate of reaction = amount of reactant used or amount of product formed / time
3
Q
What does the rate of a chemical reaction depend on
A
The collision frequency of reacting particles and the energy during a collision
4
Q
What is a catalyst
A
A substance which increases the rate of reaction
5
Q
What is an exothermic reaction
A
A reaction which gives out energy to the surroundings
6
Q
What is an endothermic reaction
A
A reaction which takes energy in from the surroundings
7
Q
What is the activation energy
A
The minimum amount of energy needed for bonds to break and a reaction to start
