Summary Basics in Rate of Reaction (GCSE) Chemistry

f a c t o r s
1) C o n c e n tr a t i on o f d i s s o lv e d 3 ) T e m p e r a t u r e 4 ) S u r f a c e A r e
r e a ct a
r ea c t a n t s > in c ↑ in te m p ↳ in c r e a s in
↳ in a co n ce n tr a t io n = in C ↑ in c o l l i s i o n f re q u e n c y A r e a in c ↑
= in c ↑ in c o ll i s io n f r e q u e n c y in cr e a s in g t h e t em p e r a t u r e f r e q u en c y
m ea n s in c ↑ in ra t e o f in c r e a s e s t h e en e r g y o f = t h i s in c r e a s
re a ct i o n r ea c t a n t p a r tic le s re a c ti o n
↳ m e a n i n g g r e a te r p r o p o r tio n - d o n e b y b r e
2 ) p re s s u r e o f g a s r e a c t a n t s o f t h e p a r t i c le s w i l l h a v e s o li d s in t o sm a
↳ in c ↑ in p r e s s u r e ( li k e m o r e e n er g y t h a n a c t iv a t i o n ( e .g . p ow d er
co n c e n tr a t io n ) en er g y n e e d e d
= in c ↑ co ll i s i o n f re q u en cy
- in c r e a s e s s u r
le" a d i n g t o m o r e s u c c e s s f u l v ol u m e ra
m ea n s in c ↑ in r a t e o f ↳ p a r t i c le s ex
rea c t io n c o l l i s i o n s → in c ↑ i n r a t e
o f rea c ti on a t t a c k
5) C a t a l y s t s a r e
s u b s t a n c e s t h a t in c ↑
re a t io n r a t e w / ou t re d u ci n g
t h e q u a n t it y d u r in g t h e
re a c t i o n


c a t a ly s t s
↳ lo w e r a c t i v a t i o n e n e r g y