renew
nofueiiniucoof
Hatuey
, ·energy
:3j)=3j!):')'(():):3
changes during reactions
8. to transformed in all chemical reactions and of matter
energy is
exchanged or physical changes
·every substance possesses stored energy
·as a result of: ·
chemical bonds holding the atoms together in a molecule
·
Kinetic energy due to constant motion of molecules
ro u s e of a chemical re a c t i o n
to carry out a chemical reaction:
↳ I.break the bonds in the
reacting particles energy absorbed
↳energy in =
endothermic
*
2. Form new bonds in product particles ·energy released
↳ out= exothermic
energy
ro l li s t ou s
reactions only proceed if particles collide effectively
·
effective collision particles are correctly aligned
->
particles collide with sufficient energy to break existing bonds
·
ineffective collisions a
colliding particles not lined up correctly
-not enough kinetic energy to form activated complex
process
converted into chemical potential
Kinetic energy energy new bonds form-chemical potential
converted back into kinetic
↳used to break existing bonds energy energy
·breaking bonds =
endothermic ↳forming new bonds =
exothermic
types
·
homogenous reaction all the reagants are in the same phase
·
heterozygous reaction reagants are in different phases
nofueiiniucoof
Hatuey
, ·energy
:3j)=3j!):')'(():):3
changes during reactions
8. to transformed in all chemical reactions and of matter
energy is
exchanged or physical changes
·every substance possesses stored energy
·as a result of: ·
chemical bonds holding the atoms together in a molecule
·
Kinetic energy due to constant motion of molecules
ro u s e of a chemical re a c t i o n
to carry out a chemical reaction:
↳ I.break the bonds in the
reacting particles energy absorbed
↳energy in =
endothermic
*
2. Form new bonds in product particles ·energy released
↳ out= exothermic
energy
ro l li s t ou s
reactions only proceed if particles collide effectively
·
effective collision particles are correctly aligned
->
particles collide with sufficient energy to break existing bonds
·
ineffective collisions a
colliding particles not lined up correctly
-not enough kinetic energy to form activated complex
process
converted into chemical potential
Kinetic energy energy new bonds form-chemical potential
converted back into kinetic
↳used to break existing bonds energy energy
·breaking bonds =
endothermic ↳forming new bonds =
exothermic
types
·
homogenous reaction all the reagants are in the same phase
·
heterozygous reaction reagants are in different phases
