Rate Of Reactions Flashcards
1
Q
What is the rate of a reaction? Examples?
A
How long it takes for reactants to form products:
Slow = chemical weathering + rusting of iron
Medium = magnesium reacting with acid to produce a stream of bubbles
Fast = fire + explosions (over in a fraction of a second)
2
Q
Hiwisthe speed of a reaction found?
A
Measure products formed/ react as used up.
Faster = steeper
3
Q
Which 2 factors affect the rate of a reaction?
A
Collision frequency = how often the particles collide
Energy released = need enough energy for reactants to form products
4
Q
Define the term ‘activation energy’:
A
The minimum amount of energy needed to start up a reaction, breaks bonds + starts up
5
Q
What is a successful collision?
A
Collision that ends in the particles recant to form products
